About a year ago I started putting in effort to lose weight and get more physically active. My effort to lose weight was successful and I dropped about 13 pounds and felt great. But a few months ago I began doing more intense exersises and I started gaining weight instead even though I'm still eating less calories than what I need to stay the same weight. I'm just really confused because I haven't even been doing any weight training to build muscle and I use a calorie calculator so I don't ever eat enought to gain weight. Help?
There are so many variables, we can't really give a good answer to "why am I gaining weight despite eating less and working out more".
But, your plan sounds pretty good.. better than the average person. You're active, and you're feeding yourself well. I'd say as long as you're improving at your activity (running faster, kicking harder), keep up what you're doing.
Here are some reasons why you may not be noticing weight decrease:
- You could have improved your hydration, so you carry a bit more water weight around on you. This is good in the long run, because you'll be able to participate in your activities with more intensity and for longer periods of time.
- You're 16, so you could be still growing taller (and if you're female, growing breasts). If you're growing, it's natural to have inconsistent weight trends. I suspect this is the biggest reason you're not seeing predictable changes. But this is okay, as long as you keep at your physical activity.
- You could be trading fat for muscle. Since you're a novice, even non-strength training activities will build muscle. If you're really interested, you could track body-fat percentage instead of just your weight. I would bet that your body-fat percentage is decreasing.