Answer:
There are three stages: alarm, resistance, and exhaustion.
I believe it is the nervous system but I'm not 100% sure
All prescriptions medicine have potential risk depend on how you respond to the medication.
For Building Muscle, Getting “Toned,” And Improving How Your Body Looks… Resting 1-3 minutes between sets is probably ideal for you. The higher your training intensity is for a given exercise and/or the more demanding it is on your body, the more you should stay nearer to the 2-3 minute range.
