It depends what way u make it u can make one in 5 min but u can also do one that takes longer
Components of a Comprehensive Exercise Program. The optimal exercise program will address health related physical fitness components of CRF, muscular strength, endurance, flexibility, body composition, and neuromotor fitness.
I believe you should take a year off and do every prereq you can get at a local college or university. a way to check that would be to go on a computer and pull up the local college, and the college you set your mind to long term. so for instance LTC (long term college) may have a prereq Bio 213 and maybe you LC (local college) has a Bio 217. you would call the LTC and say hey, does your Bio 213 line up with LC Bio 217. Most of the time they will say yes. It saves a LOT of money.
Answer: Internal influences may mean health hormones, as hormones are a key structure in how we function. An external influence could be sleep, as humans need sleep as a way to recharge, or diets as they have an effect on both hormones and physical durability