No single "get fit" cheat exists, but you can manipulate fitness via the cheat console (Ctrl+Shift+C):
boolprop testingcheatsenabled true — Enables shift-click cheats.maxmotives — Fills all motives including Fitness (hidden motive). Sim feels energized, autonomously exercises.skilllevel body 10 — Sets Body skill to max (10). Directly controls fitness capability.motives.set_motive fitness 100 — Sets hidden Fitness motive to max (requires testingcheats).boolprop testingcheatsenabled false when done—prevents accidental shift-click deletions.Best Balance: Use skilllevel body 5 to jumpstart, then play naturally. Pure cheating removes the life-sim satisfaction.