If your goal is to lose fat, your training plan should be designed to help you do so. When it comes to developing strength, muscular size, or aerobic fitness, it’s best to focus on one goal for a set period of time.
Staying healthy and fit as you get older doesn’t require you to become a Time Lord. Science has shown us repeatedly that exercise helps you live longer and goes a long way in preventing serious health issues. But there’s some other stuff you need to do too in order to feel your best as you age.