Did you know that caffeine can actually slow metabolism? That's right, the coffee you drink that speeds you up, that makes you feel as though you're ready to go in the morning, that liquid concoction that lights a fire underneath you whenever you need it believe it or not can actually slow your metabolism down. The trick is, if you're going to drink coffee, only drink enough coffee to give you that good feeling you're looking for. When you drink too much of it you are more likely to crash from too much caffeine. The effect, then, is the opposite of what you're trying to do. Once you have too much, your coffee can slow your metabolism down. Drink more water instead, or if you must drink coffee, switch to decaf if you're going to drink more than you should.
This is especially good advice for those all day coffee drinkers who are trying to increase their metabolism and lose weight; you're doing nothing but slowing metabolism through coffee. When you're trying to lose weight, coffee is great for getting you going to do your workouts first thing in the morning. But there are those people who like to drink coffee in the morning before they get to work, then they'll have coffee at the office, again they'll drink some after lunch, and then they drink some on their way home from work so that they have energy in the evening time. Most of the time, these people are so hyped up on caffeine that they can't sleep at night. They don't get adequate rest and therefore think they need coffee all day long to keep them up. It's a never ending, vicious cycle that can be avoided by curbing back on your coffee drinking and knowing that too much coffee slows metabolism.
If you're used to drinking a lot of coffee, and you're trying to lose weight, hearing that coffee can slow your metabolism is likely the last thing you want to hear. However, you need to make this life change if you hope to lose weight and keep it off. You need to speed up your metabolism and two cups of coffee is great for that. But limit yourself to two cups per day. After that, drink hot tea (decaf), or decaf coffee, or just drink water. Drinking a lot of water will help your body run more efficiently so water can actually raise your metabolism. The fact remains though, that coffee does slow your metabolism sometimes; so only drink as much as you need. Beyond that, you're only slowing down your metabolism and you're delaying the success of reaching your weight loss goals.