60 seconds of high intensity sprint training a day or every second day. (xiser.com)
Now compare that to the totally ripped, muscular, strong and healthy looking body of a world class sprinter, wide receiver, or other athlete that does mostly high intensity sprint work... which would you rather resemble? (truthaboutabs.com)
An average workout program with these elements would consist of two days of high intensity kettlebell training per week, two to three days of weight related exercises, and one day of high intensity sprints if weather allowed. (wellnessmama.com)