I am a bit confused by your grammar, but I am guessing it was just a typo and you are asking why some athletes use steroids illegally. (no worries!)
Some athletes take a form of steroids — known as anabolic-androgenic steroids or just anabolic steroids — to increase their muscle mass and strength. It depends on the steroid, but most athletes who do take them are trying to improve their performance. I cannot answer as to why they do it illegally, it depends on what is going on in there head, but the above is why they may. Hope this helps, have a nice day!
Sharps - includes disposable needles, scalpel blades, contaminated broken glass, dental burs, endodontic files and reamers. Toxic waste can have a poisonous effect. includes contaminated materials, as well as saliva-soaked gauze, used patient bibs & Surface barriers.
I personally believe this is a bad idea because, in my opinion, the owners could essentially do whatever they want to the players without them having a say in it. For an effective team there has to be a healthy balance of power distributed among everyone. If you put some player out on a baseball field and tell him do what i say and you can't say no, obviously create internal issues, but i digress.
Hope this helps! ^-^
Flexion and Extension an rotation
Hope this helps ʕ•ᴥ•ʔ
If it doesnt im sorry :(
A. Obesity. The other factors are not something you can modify by choice