Goverments must reward people who try to live healthy

I have a real problem with paying taxes on my gym membership. Don't get me wrong ,we need to pay taxes on certain things, but why do our governments tax programs and initiatives that people take to be and stay healthy? The more people at the gym, the less people with chronic illnesses and hospital stays. That translates into less money being spent on healthcare and a way to save our valuable system.
If you agree please take the time and post a note on this.