This exercise forces you to contract your lower abs so your lower back will stay flat against the floor and...This exercise builds up the lower and upper abs.
Key point: make sure your lower back stays flat against the floor the whole time.
Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check Gadget Hacks' list of supported iPhone and iPad models, then follow the step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.
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