Rm is a unit, which means "weight". It is the abbreviation of Repetition Maximum, which is directly translated as "the maximum number that can be repeated". Due to the differences between Chinese and English, this "biggest" translation has some uprisings.

In fact, rm is the weight you choose when you can complete a certain number of actions. For example, 1rm is the weight you choose when you can complete an action, 2rm is the weight you choose twice, 10rm is the weight you choose 10 times, and so on. Note that the number of times is represented by the previous numbers, "1", "2" and "10". These are the number of times, and the following rm represents the weight. For example, if you do a squat of 120kg, and you can only squat once, then your squat of 1rm is 120kg. 50 kg can squat 15 times, so your squat 15rm is 50 kg. Rm must be targeted at specific actions. You can't say who 1rm is, but someone's N rm is an action.

It's a bit of a mouthful, but it's actually quite simple after I understand it. It's just a unit expression, which is convenient for monitoring the training load during training. Note that some online concepts say that rm is a unit of intensity. Here, I would like to raise different opinions. Intensity units generally use heart rate control to reflect differences. Different sports and different rm can't monitor the intensity well. For example, the hard pull of 1rm and the squat of 2rm may reflect the same intensity in heart rate, but it is expressed by rm.