>Like someone already said: what if you get an injury going to hard at it?
There's no need to go hard, even steady walking for 20 minutes a day is healthy. And recent studies show that you don't need to jog or run, walking is almost as efficient and less stressful for your joints.
One of the best ways to exercise as long as you aren't a brain in a jar is to use an indoor rowing machine. Rowing will engage about 80% of your muscles.
There's no need to go hard, even steady walking for 20 minutes a day is healthy. And recent studies show that you don't need to jog or run, walking is almost as efficient and less stressful for your joints.
One of the best ways to exercise as long as you aren't a brain in a jar is to use an indoor rowing machine. Rowing will engage about 80% of your muscles.