Funny fitness exercise T-Shirt that's great for your work outs. Wear to the gym while working out, pumping iron, lifting weights, doing reps and sets, barbell, kettle bells, squat, or sweating during cardio. You sweat for this so show off those muscles!. Whether you are a personal trainer, exercise nut, yogi, weightlifter, runner or jogger wear this hysterical apparel to the gym, while on a run or simply for everyday wear, it along with all the other days of the week, is "pump day".