[monkeyfish]

I get really annoyed by the amount of money people spend on weight loss and excuses (it's my slow metabolism, I was slim until I had kids, it's because of my job.......)
The first law of thermodynamics can't be broken, in-out=accumulation i.e. eat too much you'll get fat, burn more energy that you eat and you'll loose weight. Most diving certification organisations are in it for the money, fat people love to be in a weightless environment, you teach diving they you'll be teaching fat people and the organisations want their money.