Would a fitness professional recommend totally eliminating fat from your diet?

A professional trainer would not recommend that you remove fats from your diet. Fats are equally important, it's taking too much of them that hurts you and can cause obesity. There's even a positive cholesterol that does good things to your body so you should never just completely remove something from your diet.

Perform surgeries is the correct answer.

Subtract your 2-minute heart rate from the heart rate you took immediately after exercising. the faster your heart rate recovers (or slows down ) the fitter and healthier your heart. if the difference between the two numbers is: less than 22: your biological age is slightly older than your calendar age