It is estimated that it is difficult to do self-weight training (such as push-ups), and the use of dumbbells and tensioners requires fixing devices, and the movements are easy to deform. It is feasible to use instruments with fixed lines. You don't have to buy this equipment yourself. It is suggested to find a gym, where the equipment is relatively complete, the bird machine clamps the chest and the Hummer machine pushes it. These are all very easy to use, and you can also seek the help of a travel coach.