Soy and seed oils and high fructose corn syrup aren't to blame for our obesity problem.
The devil is.
The devil wants us fat for the same reason he wants others starving. Less impulse control, more likely to sin, living miserable and dying early.
I've said before that working out is an act of worship, a way of expressing gratitude to God for giving us bodies and making ourselves better at loving our neighbors.
Turns out it's also a great way to frustrate the devil.
H/t Theo