And you don't need a gym membership or expensive equipment or any training for exercise. Even a tiny amount can make a huge difference.

If you're currently doing no exercise, try to walk five minutes at lunch time each day. Just five minutes. And when that's trivial to do, make it 10 minutes. Try to keep increasing this over the year. No rush. Take your time. But try to make it a habit. Even if some days it's back down to just 5 minutes.

If you're walking even just 15 minutes a day when you weren't before, you will be so much better off in ways that will be apparent. You might find that you feel happier, more alert, in a better mood overall. You might sleep a bit better. etc.

I'm not saying that a 15 min walk is a panacea that will cure all ills, but it's a multivitamin that works.