1. MORE MOTIVATION
The thought of pushing through a gut-wrenching workout on your own might not get you excited about hitting the weights—but killing it in an hour-long workout alongside 20–30 other people? That's a different story. Group fitness classes are known to be a great way to kick yourself into gear on those days when all you really want to do is plant yourself on the couch. Between vibrant instructors and motivational music, group classes help rev up lackluster energy levels, making them ideal for individuals who consistently find themselves skipping the gym for beers with coworkers.
2. ACCOUNTABILITY FACTOR
Skipping a solo workout has few consequences. Ditching your friends, however, could lead to some unwanted social shunning. Simply put, meeting workout buddies for a sweat session makes you much more likely to head to the gym. Now, multiply that effect by, say, 20 (the number of fitness buddies counting on you to show up), and you're that much less likely to slough off your workout.
3. VARIETY AND FUN
Doing the same old routine over and over can feel dull and mundane after a while. But group fitness classes tend to emphasize variety, providing an always-fresh level of fun while still getting you in shape. And, with the growing number of class types, there's bound to be one to fit whatever mood you happen to be in. Also, since instructors usually vary from session to session, even an "identical" class can seem unique depending on who's teaching.