If you neglect your health in the lead-up to your forties, you now have the perfect opportunity to turn things around. If you don't you could be facing a number of problems including weight gain, high cholesterol, high blood pressure and much more besides.
To improve your muscle function as you age, and also to ensure that you don't lose muscle over the years, you should be increasing the amount of tuna you eat, one of the best forms of protein. Essentially protein is the building block of your body and by increasing the amount you eat, you are giving your body the chance to rejuvenate old / dead cells, improve the function of its immune system, and lead to stronger, leaner, better condition muscles, skin, and bones too.
Another great tip for men right now is that you should definitely be eating more brazil nuts. Just by eating three brazil nuts every day, you could be keeping the chances of you getting prostate cancer as low as it can be. If you don't fancy nuts, Portobello and brown mushrooms can do the trick just as well.
One final tip - you should be eating more brazil nuts, or really, any kind of low fat nuts! By having a handful of nuts every day it could keep down your chances of suffering with prostate cancer and if you're not a big nut-fan, you can achieve the same effect by eating brown and Portobello mushrooms.
Taking care of yourself really does make sense when you start from the inside and work your way out. The easiest way to improve your health is to ensure that you have plenty of exercise but also that you are eating the right foods. In your forties, eating the right foods could mean the difference between suffering with a number of medical condition in your fifties and sixties... Or not!