I was always the smallest, skinniest kid you ever saw.
In 1982 I was a freshman in high school and I think I weighed 72 lbs at the start of the wrestling season. I think your average 5th grader weighs more than that. When I graduated high school 20 years ago I weighed 145.
I pretty much held that weight for 10 years. In 1995 right after I sold the pool hall I started kick boxing and lifting and put on 30 lbs of muscle. Then I stopped working out, went to school for my MBA, stopped kickboxing, and got married. My 30 lbs of muscle turned into fat. A lot of fat. Somewhere around my 33rd birthday I tipped the scales at 189 lbs.
Through exercise I reduced that over the past years to a manageable 160 or so. My pattern is that I ride my bike like a maniac in the Spring and watch what I eat and drink. I always quit drinking for Lent. By the end of the summer I'll be down to 155. Then over the holidays and birthdays I put on 10 to 12 lbs over the winter. This year I swear that won't happen. This morning I weighed 148. I've never been stronger on the bike. Probably never run or swam this well either but that really isn't saying much.