Weights are safe to do after you hit puberty--that s when your bones harden and won t be warped by doing weights. You should only do weights 3 times a week and never 2 days in a row (anything extra will do more harm than good). Get someone to design a weight program for you (VERY IMPORTANT!!!) Do cardio the other days.The elliptical machine burns 600-700 cal/hr. If you re active, you shouldn t have to worry about your weight or shape. Eat more fish and chicken and less fatty meats like pork and beef.
You are still too young to do such heavy lifting, what you should be doing is going for lighter weight. However to adjust to the drop in, weight you can try to increase the amount of reps. Also where health is concerned you should try to get all of your nutrition from foods alone, as your kidneys are still developing and cannot handle protein supplements.
Although it is great that you work out, you should be really careful doing heavy weight lifting during your mid-teens. Your bones are not completely solid and are malleable to strong pressures. Im not telling you to stop, but be-careful what you re doing, the last thing you want is to cause an injury that wil last a lifetime.
that is a huge mistake unless your six feet tall at the age of 14. lifting heavy weights above 10 to 20 (even i think 20 is too much for 14) can stud your growth which means you will stop growing taller unless your okay with staying at 5 8 through adulthood
nice nice
yur too young 2 go gym, yur body wont develop properly!