"Pumping" and "burning" (or "burning" muscles) is a popular jargon between people who often visit the gym and bodybuilders. These phenomena occur during training and affect how the muscles feel. When you train hard, especially when training "to the hilt", you may notice the following sensations:

* Burning sensation – a burning sensation in the muscles during training

* Pumping – swelling or swelling of the muscles during or after training