It is more than all of these is this your only choices?
It depends if you feel it in the muscles as the pain being from your muscles getting sore or if you feel it in your joints or another part that you should not feel pain you you should stop then and tell the doctor
The fat didn't leave his body. Your friend less consumption of fat forced your body to use the energy from the already consumed fat in your body, which in turns lowers the amount of fat visible to the eye. There's still fat in your friends body just not as much. A little fat is healthy for your body. <span />
Well, absolute strength is how much a person can life in pounds in one attempt, so i would think what a muscle can exert in one contraction would be MUSCLE STRENGTH <span />