The time is wrong. If you don't take oxygen for less than 40 minutes, the advantages of no oxygen combination are basically not reflected. After the sugar is consumed in solid form, 20 minutes of fortified oxygen can do more, which only shows that the intensity is not enough. Hiit training is good as an aerobic part.

As for static training, it is a movement in which muscles exert their strength continuously and steadily without displacement, such as a Roman bench standing up and a plant or priest's bench contracting continuously at the peak.