Spinning your wheels is usually a bad thing, but not for Tiffani Thiessen. PEOPLE reports that, along with Courtney Thorne-Smith and Jennie Garth, Thiessen recently helped raise $15,000 for an animal welfare organization in a charity spinning class. She lost to Thorne-Smith, however, in comparing max heart rates during the 45-minute session. Wearing Nike’s new heart-rate monitor, Thiessen clocked in with a 178 reading, while Thorne-Smith got hers up to 185 (Garth came in third at 175). Thiessen’s heart is otherwise in good working condition. She and her boyfriend, Richard Riccolo of TV’s “Two Guys and a Girl,” just celebrated their one-year anniversary as a couple.