I've been doing Muay Thai for 3 and half years. I had five fights (3-2). In first fight I weight 130 and fought a opponent with 7 fights (6-1) experience who weight in at 125. I won that match. However after that pretty much all of my opponent was 10 to 20 lbs heavier so I have never liked to lose weight. I keep try to stay at 130 or go up to 145. However I have first boxing match on Oct 7th.

Since I changed gym last month, I have gained four lbs in muscle. I'm worry that I will keep gaining more weights. So I'm wondering if any boxer don't lose weight before fight or do they all always try to lose as much weight as possible? I really don't like to lose weight and don't want to be pressed to by coach to lose weight. I also wonder what are the pos and con of not losing weight to fight at lightest weight possible.