Running involves shorts, shoes, a shirt and some open space; the pastime of cycling requires special weird equipment and, preferably, smooth roads with limited traffic, interesting contours and easy access to an espresso bar. Good weather is nice too but now in the Northern Hemisphere ice and snow and biting winds are omnipresent factors. And so indoor rollers were invented, then trainers, then boredom...and, lo, our needs begat a mighty range of videos.

Sufferfest videos' use of actual pro race footage, variety of sessions, and heavy doses of humor are great motivators through the dark days of winter. We checked out their latest training video, 'The Wretched' as part of our winter training regime but it wasn't quite what was expected.

The Sufferfest series of training videos have quickly gained popularity as their use of actual pro race footage, variety of sessions, and heavy dose of humor are great motivators through the dark days of winter. But how do they stack up as a power-based workout? We asked Matt McNamara to apply his expertise as a power-based USA Cycling Level 1 coach to put them to the test.