OTF is a fitness studio brand with a good reputation. Founded in the United States in 2009, it now has more than 700 stores around the world and is very popular in all countries. OTF is also a training cooperative brand developed by American Yankees. I personally like this fitness studio. During my one-year work in America last year, I exercised in their home. Not only have I lost weight and gained muscle, but the key is that their atmosphere is also great. The coach is very professional and good, and will not drag you to push the course. In addition, they will ask us to wear a heart rate monitor during exercise, and our heart rate and other indicators will be displayed on the electronic screen. The coach will guide us to grasp and adjust the rhythm of exercise and set exercise goals according to our heart rate. This mode of group system plus individual training is also very useful for sports white. Their physical education class trip is really popular, just like their slogan, working 1 hour, burning for 36 hours. I almost persisted in taking eight classes, and then lost about 8 pounds. To achieve this weight loss effect, as long as I exercise 1 hour every time, it is not too big!