I'm a 19 year old guy and planning on going to the gym for the first time because I am quite skinny and want to bulk up. So bearing in mind that I am skinny and do NOT want to attract attention to myself, what can I wear that covers pretty much the whole body and that is appropriate for the gym? This means no shorts or short sleeved t shirts.

Thank you for any answers.

Basketball shorts, and a shirt that you would wear to play any sports, or a sweat absorbent shirt. Also you can go to a sports store like Nike and they will have plenty of clothes but you mainly want basketball shorts t-shirts and gym shoes.

Wear some light fabric long pants and maybe a loose fitting shirt to wick away moisture...Oh, and definitely a smile.

Tracksuit.

some trackie bottoms and a jumper

three quarter shorts and a top.