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Nine Hammers

Try it for free in the app

Designed by Neal Henderson of APEX Coaching, is geared to improve your performance at the edge of your physical and mental capabilities. You'll take on nine VO2 and Threshold intervals, lasting from 3 to 4.5 minutes (59 min).


Try the sufferfest for free

One subscription works across Windows, Mac, iPad and iPhone devices. Try it for free for 7 days. Cancel easily at any time. If you continue, it’s just $10 USD/month or $99 USD/year.

That's it. No games. Just getting faster.

TRY THE SUFFERFEST FOR FREE