BOTTOMS UP KETTLEBELL CARRY
This version adds a level of instability, making your core work double time to keep the weight steady.
Hold a kettlebell by the handle with the bottom pointing upward and lift it to shoulder height, wrist straight, elbow down and close to your body. Walk forward slowly for 100 meters, taking small steps and keeping the weight as steady as possible. Switch hands and walk back to the start to complete one round.