First, the car itself: weight 130 kg, close to the upper limit of bicycle load. Mountain bikes below 2000 and above 1000 can't be sustained by other domestic brands except Giant Merida (the price is the bottom and entry-level among the two brands)-if they don't cross-country, the frame materials (steel and aluminum) will generally be fine, but the life of bearings and stress components (including humble screws) such as flower drums and central shafts will be shortened (which will also lead to various problems). In addition, weight-loss cycling is a long-term, mid-way or long-distance physical exercise, and the car should be able to withstand tossing. Therefore, it is recommended that cars over 2000 (such as Giant ATX 8xx series) be guaranteed in terms of design quality and after-sales service (for beginners, after-sales support is very important, and you can't solve all the problems, so you need after-sales technical support). Material: 3k cars are mostly aluminum frames and carbon fiber frames, but they are not big brands. It is not recommended that you buy it. As the saying goes, "high aluminum is better than low carbon" (that is, high-quality aluminum alloy frames of big brands are better than cheap carbon frames of small brands). Don't buy steel frames, because steel frames have long been eliminated. At present, only long-distance buses that pursue long-distance travel comfort use steel frames. . . Second, exercise to lose weight: cycling to lose weight generally rides a road bike. Road bike is a kind of car with a sports history of hundreds of years, which integrates competitive fitness and related sports science and medicine (the specific knowledge of road bike can be searched online). Road vehicles are equipped with treadmills and heart rate meters. According to the cycling course, make arrangements (for example, according to the weight and heart rate, how high the treadmill frequency is, how much water to replenish after riding, etc.). ), while controlling diet, can effectively lose weight. . . Like many people on the street, "mountain bike"-that is, riding a mountain bike to cross the road, brush the street, ride, speed, uncertain mileage and so on. Instead of losing weight, it will continue to gain weight because of the increase in exercise and diet-there are many examples in cycling circles. The purpose of mountain bike is XC (cross-country), not "mountain horse" (the domestic environment causes this feature, so it is necessary for you to recognize this point. Not everyone around you rides mountain bike, so you should follow suit; In Europe and America, mountain bikes always go to mountains, forests, villages and bicycle parks to play cross-country games. So, if you want to lose weight by mountain biking, you have to go cross-country (there are no wild roads and forests around, you can rush up the steps, get on and off the bus, or practice riding skills-including repairing cars, jumping rabbits and picking dolphins). Physical energy consumption in cross-country is about 1k m = swimming. . . Off-road, the 3000 car is the entry, and the level of Giant XTC 800 is above (4000 XTC 820 is suitable). You should also buy necessary riding equipment, including helmets, gloves, breathable and sweat-absorbing riding clothes, sun protection sleeves in summer, etc. . . Third, if you want to lose weight, you don't need to ride a bike, because you have a lot of investment in the later period, and riding a bike has a lot of pressure and knowledge. You can't be blind. For example, "stepping on heavy teeth" is a mistake that many beginners easily make, which will hurt your knee (the meniscus of the knee can't be repaired, and the joints of the elderly will have problems). Mountain bike itself is not designed for high-speed riding on the highway, so it is not suitable for cycling to lose weight. Going to the gym and riding a sports bike under the guidance of a coach is the best way, and it saves money and worry than buying a car and equipment.