Burning / ache Muscles

I had this problem when I first started running. It turned out to be because of low levels of potassium so I just eat a banana before a workout. My pain disappeared the first day I started doing that.

Know the difference between "pain" and "discomfort". Pain is an actual physical problem that would lead you to believe you've possibly injured yourself. If your muscles are on fire because you haven't exercised in a while, that's a good thing. That's a lactic acid build up. In order to make gains in the exercise room, you HAVE TO STIMULATE THE MUSCLES. If you just go through the motions without challenging yourself, you might as well stay home. Don't give up. It will get easier, but that's because your brain will finally tell your muscles, "hey, muscles...there's a new Sheriff in town, and he's gonna whip you into shape. I'm in charge now, and you will do what I say!!!" You will become stronger, more flexible, and you will see visible results in the mirror. Keep it up!

Also, just a suggestion, but I wouldn't eat anything before a workout unless you think you'll pass out if you don't. Try to workout on an empty stomach, or at least with your most recent meal two hours prior. The body burns carbs/glucose first because it's the most efficient form of fuel to break down. If you load up on carbs (even fruit) before you workout, your body will burn the carbs from the food first, instead of the glucose in your cells. Once the carbs from the food have been used, then it attacks the cell glucose, and only when the cell glucose is gone does it start to use the fat stores (the second more desirable form of fuel for the body to use). Go straight for the cells and empty 'em out!!! Then after about 15-20 minutes, you will be in fat-burning mode. Good luck!