The singer and actor was diagnosed with type-1 juvenile diabetes when he was 13, so he's always been hyper-aware of making healthy choices. To bulk up for Kingdom (a series about a family of MMA fighters), though, he upped his diet from 3,000-4,200 calories a day. After getting blood test results via his nutritionist, Jonas knows a plant-based diet works well for him. He even uses vegan protein powder in his post-workout shakes, and adds berries and almond milk.
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