The newest gym machine doesn’t have a single high-tech feature (heck, it doesn’t even require electricity), but it could revolutionize your workout. Check out Core Stix, a set of weighted bars and a base, that lets you do dozens of strength moves in one area. Unlike tubing or dumbbells—where the tension decreases as you lower the band or weight—the sticks provide constant resistance, so your muscles work harder during every exercise. Corestix is currently in a few private gyms (I tried it with celeb trainer Gregg Miele here in L.A.), but be on the lookout for it soon in your club.
—Jeanine Detz, SHAPE fitness director