Calvin Schaper der Alderwereldt van Sint John

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About Calvin

Trainer at: Coach Calvin Online PT

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Private Personal Training Online Personal Training Partner Training Improving General Fitness Muscle and Strength Gain Improving Flexibility Nutrition and Meal Plans Functional and Core Training Weight Loss

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Calvin's Posts

18 Aug 2025

The “Natural” Supplement Tier List

As a coach, I often get asked: “Which supplements should I take?”. Especially when kicking off a new project with a client. I don’t make a cent off supplement sales; my job is to give my clients the best personalized guidance towards their goals. And I always start by saying: There is no supplement that […]

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Calvin Schaper der Alderwereldt van Sint John