mastrubation
Just Stop.
No it does not.
Stress relief
Masturbation doesn't do any damage.
yes
Healthy food makes us live longer, have more energy , and we have less health problems.
There is no best way. It is whatever you find suitable.
it makes your heart heathly
For a heathly lifestyle 
it makes your heart heathly
If is full of vitimans and nutrients