18yr boy needin to lose Body Fat and gain muscle! Plz Help!

If you are fit and active then your body fat's cause is either genetic or dietary. Talk to a sports nutritionist or a sports doctor. Don't take any pills without their recommendation.

Also are you doing any strength training (weights?). Talk to a strength and conditioning coach about the sort of exercise regime that will build up strength required for your chosen sport(s), the muscle definition will fall naturally from that.

Unless you want to be a body builder or a model focus on what your sport requires from your body, not what you want your body to look like.

As a former professional diet addict I can tell you only one thing works: Eat less and move more. Save the money you would spend on pills, powders, ab machines etc and hire a personal coach/trainer for a few months. Once you know the proper way to workoutt you can do it yourself for the longterm. Diet basics: lean protein, high fiber "brown" carbs, fruits, veggies, olive oil and water.

You have to decide if you want to get more "cut," which would entail burning fat while maintaining as much muscle as possible, or if you want to get bigger, which means you'll have to keep packing on a little fat. Once you gain some weight, then you adjust your diet to get leaner while keeping your new muscle. Can't do both at once, at least without steroids.

First off, you need to lift weights. It's the ONLY way you're going to build muscle, which, the more you build, the easier it is to burn fat. Are you lifting? That, and your diet are the two ways you're going to accomplish what you want. And if you plan on playing sports in college, you need to be on a strength training program. Big jump from high school.

Don't worry about pills. The only effective fat burner that was over the counter is now illegal: the ephedrine/caffeine stack. The rest is crap. Besides, you're 18, and it sounds like you don't have a good understanding of diet and working out. Supplements shouldn't be a part of your vocabulary right now, with the exception of a multi-vitamin, and maybe some protien shakes.

Do some searching online for weight training, bodybuilding diets, ect.

Omigod Slappy - that's the first serious response I've ever seen you write!

On the question of weights be sure you understand the idea behind reps and load.

as a guide do 3 or 4 of each set of reps with a minute rest between each set

6 reps at max load builds strength

8-12 reps at around 85% max load results in hypertrophy (muscle growth)

15+ reps at lower loads = stamina

I was born before the years had numbers, so I've seen just about everything. I've also won my share of power lifting contests. Here is one thing to keep in mind:
If you take two guys who work out equally hard on the bench press and one of them does heavy squats or leg presses, the one who does the leg presses will have greater gains on his bench press, not to mention the increased leg strength. Greater gains equals more muscle mass, which in turn means increased metabolism and fat burning.

Use a trainer or a coach and don't work out alone.