6 must-have items in your gym bag A towel: In case you're pressed for time, a towel will come in handy should you shower at the gym. A phone case for your arm: Keep your $600 smartphone secure and attached to you rather than placing it on the elliptical machine, treadmill or stairmaster. A shaker: Do you even lift, bro? Whether you're a beginner or gym veteran, throw protein or a mix of fruit into a juicer then bring it with you to refuel at the end of your workout. Proper clothes: Don't wear anything with cotton. Pick up some Nike Dryfit or clothing from Under Armour. Also, pack a change of clothes for work or going out afterwards. Deodorant: C'mon, do I even have to say this? Headphones: Whether they're the over-ear kind, or ear buds, you'll want to be blasting some music while you push through an intense workout.