Best of Boston

2000 Best Aerobics, Instructor

Kieron Reynolds, City Gym

Let’s be blunt: Kieron Reynolds kicks ass—literally, with a medley of cardio and strength exercises. In addition, his heavy brogue and constant quipping make the workout whipping a comedic treat. When Reynolds is not bolting around the room to check your form, barking an inspirational word, or holding a punching mitt in front of you, he doubles as a deejay and keep the place booming with techno tunes. If you haven’t sweated enough during Reynolds’ hour-long aerobics class, his 30-minute ab session that follows is sure to finish you off.

542 Commonwealth Avenue, Boston, 617-536-4008,