Welcome to 30 Day Jackknife Sit Up Advanced Challenge, the workout used in this challenge is a jackknife sit up.
Here are some of the tips to complete this 30 day jackknife sit up advanced challenge. Its recommended to keep your body hydrated so its better to drink a minimum of 2.5 to 3 liters of water each day. Its recommended to eat whole foods and forget processed or canned foods. Take green smoothies as pre workout and post workout so that your body recovers and finally its better to eat smaller portions of food many time in a day instead of having one big meal.
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