Gym benefits.
In preparation for your gym secession it is important not to have any sodas, or fast food. Have a light meal to sustain you before hand. Having a big meal will cause you to vomit when working out.
Sessions should be an hour, for beginners. You should go a minimum of 2 days a week. One day you should work out your arms. The next day you should work out your legs. That way each muscle group gets a chance to rest. Start on low weight and work your way up.
If doing cardio start on low speed and work your way up. If you are in a jog you can run for as long as you can until your patience wears off. Sometimes cardio can wear you out for the weights. Remember to stretch so as not to pull a muscle.
Do not take steroids. They enlarge the heart and shrink the testicles. Do not expect instant visual results. Working out at the gym is a way of life, not a few sessions cure.
Benefits include more energy and strength, but if you do the workout wrong you will injure yourself.