Acommon mistake that's made during resistance training includes

drinking too much water during a workout
training too few muscles of the body
training too few times during the week
lifting weight that is too light

Training too few times during the week

Explanation:

Resistance exercise in the form of exercise which is created to increase muscular fitness through muscular exercise or muscular group against external resistance.

Resistance can be stated as a workout that causes the muscles to contract against an external resistance and that external resistance could be bricks, a bottle of water, dumbbells, etc.

lifetime activities are certain actions that are either required throughout your life or you choose to do them. for example, eating is considered a lifetime activity, drinking water or other beverages, keeping your body clean, taking medicine. those types of actions are considered lifetime activities.

starvation is bad because your body needs nutrition and to deprive it of nutrition can cause problems with both health and fitness.

explanation:

it can make weight loss slow down over time, but it won't cause someone to gain weight depsite restricting calories. starvation causes weakness in the senses like thirst.