Loading Weights is My Cardio Funny Workout Gym T-Shirt for Men, Gym Gear, Gym Apparel, Gift for Weightlifters, Gift for him Boost your gym workout with our Loading Weights is My Cardio Funny Workout Gym T-Shirt for Men. Made with 60% Cotton and 40% Poly fabric, it's very soft, lightweight, and designed with a manly fashion cut and side seams for a comfortable, regular fit. Perfect for those who make lifting weights their cardio.