diff --git a/data/json/construction.json b/data/json/construction.json
index 0516cceacd6b1..a6bc62668bbc1 100644
--- a/data/json/construction.json
+++ b/data/json/construction.json
@@ -2148,7 +2148,8 @@
     "time": "1 m",
     "components": [ [ [ "w_table", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_terrain": "f_table"
+    "post_terrain": "f_table",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -2185,7 +2186,8 @@
     "components": [ [ [ "workbench", 1 ] ] ],
     "pre_note": "Can be deconstructed without tools.",
     "pre_special": "check_empty",
-    "post_terrain": "f_workbench"
+    "post_terrain": "f_workbench",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -2282,7 +2284,8 @@
     "components": [ [ [ "hammock", 1 ] ] ],
     "pre_note": "Can be deconstructed without tools.  Must be supported on at least two sides.",
     "pre_special": "check_support",
-    "post_terrain": "f_hammock"
+    "post_terrain": "f_hammock",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -2294,7 +2297,8 @@
     "components": [ [ [ "hammock_net", 1 ] ] ],
     "pre_note": "Can be deconstructed without tools.  Must be supported on at least two sides.",
     "pre_special": "check_support",
-    "post_terrain": "f_hammock_net"
+    "post_terrain": "f_hammock_net",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -2456,7 +2460,8 @@
     "components": [ [ [ "anvil", 1 ] ] ],
     "pre_note": "Can be deconstructed without tools.",
     "pre_special": "check_empty",
-    "post_terrain": "f_anvil"
+    "post_terrain": "f_anvil",
+    "activity_level": "MODERATE_EXERCISE"
   },
   {
     "type": "construction",
@@ -2468,7 +2473,8 @@
     "components": [ [ [ "char_forge", 1 ] ] ],
     "pre_note": "Can be deconstructed without tools.",
     "pre_special": "check_empty",
-    "post_terrain": "f_forge"
+    "post_terrain": "f_forge",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -2480,7 +2486,8 @@
     "components": [ [ [ "still", 1 ] ] ],
     "pre_note": "Can be deconstructed without tools.",
     "pre_special": "check_empty",
-    "post_terrain": "f_still"
+    "post_terrain": "f_still",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -2531,7 +2538,8 @@
     "time": "10 m",
     "components": [ [ [ "straw_pile", 40 ], [ "withered", 40 ] ], [ [ "rope_30", 1 ], [ "rope_makeshift_30", 1 ], [ "vine_30", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_terrain": "f_hay"
+    "post_terrain": "f_hay",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3106,7 +3114,8 @@
     "components": [ [ [ "2x4", 12 ], [ "log", 12 ] ], [ [ "rope_makeshift_30", 1 ], [ "rope_30", 1 ], [ "vine_30", 1 ] ] ],
     "pre_special": "check_up_OK",
     "pre_terrain": "t_rock",
-    "post_special": "done_mine_upstair"
+    "post_special": "done_mine_upstair",
+    "activity_level": "EXTRA_EXERCISE"
   },
   {
     "type": "construction",
@@ -3174,7 +3183,8 @@
     "time": "5 m",
     "components": [ [ [ "fridge", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3185,7 +3195,8 @@
     "time": "5 m",
     "components": [ [ [ "minifridge", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3196,7 +3207,8 @@
     "time": "5 m",
     "components": [ [ [ "freezer", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3207,7 +3219,8 @@
     "time": "5 m",
     "components": [ [ [ "minifreezer", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3218,7 +3231,8 @@
     "time": "5 m",
     "components": [ [ [ "oven", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3229,7 +3243,8 @@
     "time": "5 m",
     "components": [ [ [ "stationary_water_purifier", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3240,7 +3255,8 @@
     "time": "5 m",
     "components": [ [ [ "arcade_machine", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3251,7 +3267,8 @@
     "time": "5 m",
     "components": [ [ [ "forge", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3262,7 +3279,8 @@
     "time": "5 m",
     "components": [ [ [ "kiln", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3273,7 +3291,8 @@
     "time": "5 m",
     "components": [ [ [ "drill_press", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3284,7 +3303,8 @@
     "time": "5 m",
     "components": [ [ [ "tablesaw", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3295,7 +3315,8 @@
     "time": "5 m",
     "components": [ [ [ "mitresaw", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3306,7 +3327,8 @@
     "time": "5 m",
     "components": [ [ [ "bandsaw", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3317,7 +3339,8 @@
     "time": "5 m",
     "components": [ [ [ "router", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3328,7 +3351,8 @@
     "time": "5 m",
     "components": [ [ [ "planer", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3339,7 +3363,8 @@
     "time": "5 m",
     "components": [ [ [ "jointer", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3350,7 +3375,8 @@
     "time": "5 m",
     "components": [ [ [ "hydraulic_press", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3361,7 +3387,8 @@
     "time": "5 m",
     "components": [ [ [ "air_compressor", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3373,7 +3400,8 @@
     "qualities": [ [ { "id": "WRENCH", "level": 1 } ] ],
     "components": [ [ [ "solar_panel", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3385,7 +3413,8 @@
     "qualities": [ [ { "id": "WRENCH", "level": 1 } ] ],
     "components": [ [ [ "reinforced_solar_panel", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3397,7 +3426,8 @@
     "qualities": [ [ { "id": "WRENCH", "level": 1 } ] ],
     "components": [ [ [ "solar_panel_v2", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3409,7 +3439,8 @@
     "qualities": [ [ { "id": "WRENCH", "level": 1 } ] ],
     "components": [ [ [ "reinforced_solar_panel_v2", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3420,7 +3451,8 @@
     "time": "5 m",
     "components": [ [ [ "large_space_heater", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3431,7 +3463,8 @@
     "time": "5 m",
     "components": [ [ [ "small_space_heater", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3442,7 +3475,8 @@
     "time": "6 m",
     "components": [ [ [ "small_storage_battery", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3453,7 +3487,8 @@
     "time": "6 m",
     "components": [ [ [ "medium_storage_battery", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3464,7 +3499,8 @@
     "time": "6 m",
     "components": [ [ [ "storage_battery", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3475,7 +3511,8 @@
     "time": "6 m",
     "components": [ [ [ "large_storage_battery", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3486,7 +3523,8 @@
     "time": "6 m",
     "components": [ [ [ "battery_car", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3497,7 +3535,8 @@
     "time": "6 m",
     "components": [ [ [ "household_washing_machine", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3508,7 +3547,8 @@
     "time": "6 m",
     "components": [ [ [ "household_dishwasher", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "BRISK_EXERCISE"
   },
   {
     "type": "construction",
@@ -3519,7 +3559,8 @@
     "time": "6 m",
     "components": [ [ [ "autoclave", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "MODERATE_EXERCISE"
   },
   {
     "type": "construction",
@@ -3530,7 +3571,8 @@
     "time": "5 s",
     "components": [ [ [ "standing_lamp", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "NO_EXERCISE"
   },
   {
     "type": "construction",
@@ -3541,7 +3583,8 @@
     "time": "5 s",
     "components": [ [ [ "standing_floodlight", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "NO_EXERCISE"
   },
   {
     "type": "construction",
@@ -3552,7 +3595,8 @@
     "time": "4 m",
     "components": [ [ [ "foot_locker_recharge_station", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "MODERATE_EXERCISE"
   },
   {
     "type": "construction",
@@ -3563,7 +3607,8 @@
     "time": "2 m",
     "components": [ [ [ "box_battery_charger", 1 ] ] ],
     "pre_special": "check_empty",
-    "post_special": "done_appliance"
+    "post_special": "done_appliance",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3576,7 +3621,8 @@
     "tools": [ [ [ "pliers", -1 ], [ "multitool", -1 ] ] ],
     "pre_flags": "WIRED_WALL",
     "pre_special": "check_no_wiring",
-    "post_special": "done_wiring"
+    "post_special": "done_wiring",
+    "activity_level": "LIGHT_EXERCISE"
   },
   {
     "type": "construction",
@@ -3880,7 +3926,8 @@
     "qualities": [ [ { "id": "DIG", "level": 1 } ] ],
     "byproducts": [ { "item": "clay_lump", "count": [ 6, 12 ] } ],
     "pre_terrain": "t_clay",
-    "post_special": "done_extract_maybe_revert_to_dirt"
+    "post_special": "done_extract_maybe_revert_to_dirt",
+    "activity_level": "EXTRA_EXERCISE"
   },
   {
     "type": "construction",
@@ -3893,7 +3940,8 @@
     "qualities": [ [ { "id": "DIG", "level": 1 } ] ],
     "byproducts": [ { "item": "clay_lump", "count": [ 6, 12 ] } ],
     "pre_terrain": "t_claymound",
-    "post_special": "done_extract_maybe_revert_to_dirt"
+    "post_special": "done_extract_maybe_revert_to_dirt",
+    "activity_level": "EXTRA_EXERCISE"
   },
   {
     "type": "construction",
@@ -4035,7 +4083,8 @@
     "pre_special": "check_no_trap",
     "post_special": "done_mark_firewood",
     "dark_craftable": true,
-    "post_flags": [ "keep_items" ]
+    "post_flags": [ "keep_items" ],
+    "activity_level": "NO_EXERCISE"
   },
   {
     "type": "construction",
@@ -4048,7 +4097,8 @@
     "pre_special": "check_no_trap",
     "post_special": "done_mark_practice_target",
     "dark_craftable": true,
-    "post_flags": [ "keep_items" ]
+    "post_flags": [ "keep_items" ],
+    "activity_level": "NO_EXERCISE"
   },
   {
     "type": "construction",
diff --git a/src/construction.cpp b/src/construction.cpp
index abc43d0d531e0..f37f396359936 100644
--- a/src/construction.cpp
+++ b/src/construction.cpp
@@ -1893,7 +1893,7 @@ void load_construction( const JsonObject &jo )
     }
 
     con.activity_level =
-        activity_levels_map.find( jo.get_string( "activity_level", "NO_EXERCISE" ) )->second;
+        activity_levels_map.find( jo.get_string( "activity_level", "MODERATE_EXERCISE" ) )->second;
 
     if( jo.has_member( "pre_flags" ) ) {
         con.pre_flags.clear();
diff --git a/src/construction.h b/src/construction.h
index 099fac7fec7a4..427b6b667119a 100644
--- a/src/construction.h
+++ b/src/construction.h
@@ -105,7 +105,7 @@ struct construction {
         //can be build in the dark
         bool dark_craftable = false;
 
-        float activity_level = NO_EXERCISE;
+        float activity_level = MODERATE_EXERCISE;
     private:
         std::string get_time_string() const;
 };