I documented my process several times throughout the first thread when we first started it.
I was always a chubby kid in middle and high school. I was around 180 lbs at 5'10". I ballooned up to 220 lbs in undergrad due to late night studying and bad eating habits. I just wanted to drop to 180 lbs, my initial weight. I started doing Muay Thai, stopped eating fast foods on the regular and cut out alcohol. I dropped down to 180 lbs in several months. I kept going to see how far I can push it. Within a year, I was down to like 140 lbs. People who didn't see me for a while swore I was doing drugs or got surgery to shred the lbs
At that time I was still in school so I was able to watch what I ate. I pretty much ate lean turkey ($20 for a Foreman grill was a great investment!). I only ate out like once a week. I didn't start lifting weight until almost a year later, this is the only thing I would've done differently if I can so I can retain some of the muscles I had. I did Muay Thai 5-6 times a week, and they were really just one big cardio session. I attended the first Muay Thai gym in the states and the cats there were really OG, like I had to talk to them in Thai because they spoke no English. It would be like 5 mins of jump roping, then 40 mins of combo stuff, ie 10 high kicks, mid kicks, knees, etc. and pairing up punches. The last 10 mins or so was for sparring.
I stopped because of injuries and I got a job out of school so I couldn't go to Muay Thai classes as often. I then joined 24 Hr Fitness, which I still go to today. That was when I started talking to the dudes on the OG thread, which were Joe Camel and Al Audi. I started eating to by BMR, and started gaining weight a bit.
I love HIIT, I do that now at the gym for cardio (though it's not really true HIIT since the treadmill does cap out at a certain point).