This exercise may or may not require boxing gloves (your preference). Standing with your dominant foot forwards, stand arm's length away from the standing floor bag. With your arms to your side at attention, take your right arm and swing forwards towards the bag while twisting your arm to ensure that you hit the bag with your knuckles aiming towards the sky. Proceed the same step with your left arm, ensuring that you are twisting your arm as you punch the bag. I complete this exercise daily as it strengthens my back, firms my triceps, and is certainly a great way to destress. The key is to have my hands at their sides, with the palms on my thighs, and then to twist as I move to punch the bag.