If you’re like the average partygoer, self-control goes out the door when the holiday season comes around. Festive gatherings offer opportunities to indulge in sweet treats and enjoy traditional dishes, most of which are plentiful in calories, fat, and sugar.

When planning a nutritional strategy for building muscle strength, power, and force, most athletes think of protein and carbohydrates – not vitamin D. But emerging science is beginning to show exactly how important vitamin D is for muscle function.