Can someone describe some of the methods of progressive resistance exercise used to improve muscle fitness.

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

What body systems are involded in sleep homeostasis

Based on the chart, what are the three most effective methods to protect against pregnancy?