Don't have access to the gym and don't want to roll about on the floor doing in effective ab techniques that are as functional and useful as a condom with holes in?
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Let's be honest, unless you're wanting to be the champion of getting out of bed fast, a sit up isn't the best and most functional core exercise 👀
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Try this little routine. Work til failure, accept failure as your bodies way of letting you know you've managed to reach your physical capacity. You'll be rewarded by your body adapting to the stimulus you've given it (as long as you eat well to repair and fuel your workouts
Vince Azzopardi