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BodyRock Kettlebell. I was blown away by how intense the contractions were on my abs and how unbelievable they felt after my first Flex Belt abdominal workout. Sign Up Login.

These are people that are in peak physical shape and understand how to work their abs. Dumbbells are great for working the major muscles groups in your lower body, including your gluetal muscles, hamstrings, and quadriceps. My favourite place ….