Comment by pandaman

Also, the same on the exercise side: the most efficient fat loss exercise (literally oxidizing body fat) is moderate intensity high volume aerobic one. You don't need a gym membership, a coach, or a fancy machine to do this. And if you are already a member in a gym, the gym won't be very happy with you doing 2-4 hours of zone 2 there. They'd rather you hire a personal trainer who will give you some resistance exercises, each "targeting" fat at some part of the body. They are exhausting and you will feel completely spent after doing them for 30 mins. The faster you get tired and more damage you cause to the muscles ("burn") the better is the exercise regimen (and less likely you oxidize any fat).