Everyone has different intentions behind joining a gym. People want to do gyming with minimum injury, proper recovery, without hampering immunity and losing muscle. Just going to a gym and working out is not enough. You need to be sure about the nutrition you need for your body. Diet plays a big role (almost 80%) here and can either make or break your gym goals.

CHECK DEFICIENCIES
Before even beginning to gym, make sure you have no nutrient deficiencies. For instance, for a person who is Vitamin D or calcium deficient, workouts can lead to injury and a weakened immunity. For a magnesium deficient person, workouts can leave bad cramps and delayed recovery.

PRE-WORKOUT FOOD
The best pre-workout food needs to be a good combination of carbs with protein. They help you in maintaining good energy levels while working out.

HYDRATE WELL
Staying well hydrated before a workout is also one of the basic requirements. Do not start with any new activity without attaining good hydration levels. The water intake must start 2 to 3 hours before a workout or any sporting activity. If a person sweats too much or works out in scorching heat, he must have at least 500-600 ml of water 2-3 hours prior to exercise. 

Gym/dietary supplements are not advised at a beginners' stage. They are best suited for people who either have a severe deficiency, suffering from digestive problems that hamper nutrient absorption or a medical condition.