Training smarter, not harder, is the key to longevity as you age. It's a lesson that comes to most of us at some stage, but I wish someone had told me sooner.
Working your key major muscle groups several times per week can help counteract the natural loss of muscle mass and strength that occurs through the decades, but there are some muscle groups I really want you to focus on later in life, and those are your glutes, hips, legs and shoulders.
