@@jesusiskingofkings4428 it depends , in Islam every deeds will be judge according to you intention , if you take it as a medicine to cure certain illnesses then it allowed , but if you use it cuz you want to be strong and very muscular then it's haram. Islam is a way of life and Islam is very beautiful.
Tip is an american thing, even in australia they dont tip because the workers get a salary. In some places they might even be insulted if you " tip " because they feel you are giving them like a charity