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The easiest way to do 5:2? Prolon 1-Day Reset. Our clinically-backed 1-Day Reset uses the same fasting-mimicking technology as our 5-Day to keep your body in a fasting state while still providing essential nourishment.

Save on 4x Reset Bundle with a Prolon discount code

Checkmate is a savings app with over one million users that have saved $$$ on brands like Prolon.

The Checkmate extension automatically applies Prolon discount codes, Prolon coupons and more to give you discounts on products like 4x Reset Bundle.