Hi, there! (:
Well for starters - you shouldn't take your friend's medication because it can internally harm you. Chances are if it's prescribed by a doctor for someone other than you it's not made for your body which can lead to a very dangerous reaction on your end.
Another reason is that it's not actually legal.
But lastly, it can lead to a road of addiction, or even you going and trying to experiment further, and it could lead to long term damage.
I hope all is well, and you pass! Good luck, rockstar! (: If you have any follow up questions, or even a comment on what i've wrote - let me know! (:
Answer: Fitness is the condition of being physically fit and healthy and involves attributes that include, but are not limited to mental acuity, cardiorespiratory endurance, muscular strength, muscular endurance, body composition, and flexibility.
