Hi all, I'm an 18 year old, 5'9'' and was around 178 pounds a week ago. After not doing much exercise at all and not watching what I eat, not liking the size of my gut etc, a few days ago I decided I was going to lose about 15-20 pounds. My BMI sits at around 26, therefore being overweight. It should be noted I have quite a lot of muscle in my upper body. Anyway, I started running on Tuesday for the first time in ages, and have now been running each day with my dog for around half an hour walking him after for another half hour, also walking later on for around 15-20 minutes. Unfortunately, going from nothing to much more has caused the muscles in my legs to get really worn out. They ache and it's hard to walk down the stairs or get up, the pain is in my thigh and I researched this as overuse. The same pain has developed in my lower leg. I initially thought eating next to nothing would be a good idea, but ruled this out yesterday when someone told me it was only a very short term solution and dangerous in the long run. So I've started a new eating pattern, where I have shredded wheat and black coffee in the morning, maybe pasta and some kind of salad with grapefruit, melon and grapes for lunch and dinner is never anything set if you will. A problem (more physiological than anything) is that I've become a little obsessed with measuring my weight. It measured 179 pounds just over a week ago, and after my first run (two days ago) decreased to 173. This really encouraged me, but it went up to 176 by the day's end. Yesterday after my run it measured 172.5, going back to 176 at the end of the day. After my run today, I weighed 171.5 pounds, but was really angered as it went up to 178 a couple of hours after. I figured it was just because I'd eaten, but it showed how obsessive I'm getting over weight measurments. Like I said, I want to get down to about 162 pounds, so am I on the right track to achieve that fairly quickly? I'll have to cut down on running to maybe 4-5 times a week but I'll continue to walk everyday. Overall, is my new lifestyle healthy? I know the way I eat is a lot better, but I'm worried about this muscle pain I've been getting.