Gym
All Gyms in GTA San Andreas are open all day, every day. Working out rids CJ of extra Fat and improves his Stamina and Muscle. If, in a single day, you lose 40% fat or gain 20% Stamina or Muscle, you will have to wait 12 hours before being allowed to workout again.
They each feature a trainer with a different fighting style. At each, walk into the marker and reply positively when the trainer asks if you want to learn some new moves. The training takes a tutorial-type approach, with tips on-screen to tell you how to execute the moves and when. You must defeat the trainer to learn the new moves. Each teaches you a new Running Attack, Ground Attack, and Combo Attack.
Los Santos Gymnasium features a Boxing trainer
Cobra Marital Arts features a Martial Arts trainer
Below The Belt features a Kick Boxing trainer
They are all equipped with four pieces of exercise equipment:
Treadmill
This exercise increases Stamina and sheds Fat. The treadmill offers 10 speed levels (the higher the level, the faster your stats will change). Higher levels are easier with greater stamina. When CJ begins running, power and distance gauges, as well as a level indicator, appear on-screen. You must keep pace with the treadmill to keep the power gauge full - if it empties, you fall off.
Stationary Bike
This exercise increases Stamina and sheds Fat. The stationary Bike offers 10 speed levels (the higher the level, the faster your stats will change). Higher levels are easier with greater stamina. When CJ begins running, power and distance gauges, as well as a level indicator, appear on-screen. You must keep cycling to keep the power gauge full - if it empties, you'll have to start over.
Bench Press
This exercise increases Stamina and sheds Fat. The weights range from 40 lbs to 320 lbs. When you begin, a power gauge and a reps indicator appear on-screen. You must get the power gauge to fill to complete one rep.
Dumbells
This exercise increases Stamina and sheds Fat. The weights range from 20 lbs to 110 lbs. When you begin, a power gauge and a reps indicator appear on-screen. You must get the power gauge to fill to complete one rep.