Yes, eat healthy and exercise and you will most likely stop experiencing this.
You're probably not in shape, go outside and walk for about 30 minutes or so, go do some form of exercise for about an hour every day or two and you should be fine. Heck, do jumping jacks for about 10 minutes straight take a 5 minute break and drink water then go back to doing them again for about an hour.
You need to stay fit, that doesn't neccasarily (sp?) mean don't be fat, it just means that you should be able to be athletically able to move around still. Linemen are fat in football, but they are still fit to run and do things. I'm not saying you're fat, just telling you something that might be useful.