Approaching 40
 

At this point you have to learn exactly what effect certain foods and supplements have on your body. Meal prep and macronutrient counting become more of a priority since mistakes made in the kitchen can be hard to reverse with a slower metabolism. Try using cinnamon and chromium to keep your blood sugar stable.

Time your meals according your schedule, for instance having fast digesting carbs as soon as you are done training. Keeping your diet as simple as possible allows you to switch one macronutrient to see what's working and what isn't. This way there are fewer margins for error