The libraryVitality
High-Intensity Interval Training
Four 4-minute intervals three times a week raised VO2 peak 10 percent in four weeks; 40 minutes of steady work raised it 4 percent.
Also called HIIT, High-Intensity Intermittent Exercise, Sprint Interval Training, SIT, Interval Training
Who it's forAny man who says he hasn't got the time to train.
The item
Three squares: proven in human trials. Two: a strong signal. One: early human data. Striped: the trials disagree.
Emergency: call 911.
I am not a doctor. This is not medical advice. This is self-education. Talk to a physician who has your history before you change anything.