New Year, New Workout: Aquacycling

Aqua Studio is the first and only cycling studio to put the stationary bikes underwater (up to the waist). The result is a tough workout: The faster you pedal, the more resistance you create. The water is kinder on joints, and you'll improve your breathing capacity. Fear not the shock of chilly water. The room and pool are kept at optimum temperatures to warm up the muscles. AquaStudioNY.com

Sweat Factor: 3 out of 5

Sexy Factor: 5 out of 5

Shame Factor: 3 out of 5

Even if your lower half will mostly be below the surface, the sharp and workout-appropriate Deflection Brief by Speedo is sure to get others' eyes looking where you want, $44; SpeedoUSA.com