Resistance training you control your weight because it
controls muscle tissue in the body
decreases fat tissue in the body
lowers your overall metabolic rate
increases your resting metabolic rate

Resistance training helps you control your weight because it increases your resting metabolic rate. As muscles contract and relax they produce and release energy within the muscle fibers. When a person is engaged in resistance training, the body's recovery period is heightened and engaged therefore increasing its overall resting metabolic rate. This then contributes to controlling overall body weight. A fast metabolic rate means that the body is efficiently using its stored energy.

Resistance training helps you control your weight because it increases your resting metabolic rate. A reason why this happens is because you get an increase in the amount of muscle in your body. This is then followed by an increase in metabolic resting rate. 

Expansion of the stomach