You just try to love in a controlled and reproducible manner in a laboratory setting!
Maybe this will answer your question:
The average Mormon is more likely to be in top physical condition than anyone on this site.
it's not because they have 'god' in them, but what the Mormon society has in common with recommended healthy living - no alcohol, no premarital sex, no risky hobbies, no caffeine, plenty of exercise, home-prepared meals, no smoking, and so on.
Of course someone looking at a demographic of Mormons (or any religious group that bases itself on what it CANNOT do rather than what it CAN) will appear to be healthier than others.