Fast Track to Fitness

Rain Rugged

The Polar Loop measures how you spend your day, such as steps taken and calories blasted, and it’s waterproof, so your time spent in the pool, braving the waves — or even just walking in the rain — always gets counted. $110, polarloop.com

Posture Pal

Not only does this tiny device monitor daily activities like steps and calories, but the Lumo Lift also accesses your body’s position. Every time you dare to slouch, it vibrates to remind you to pull your shoulders back and raise your head. $99, lumobodytech.com

Pulse Perfect

The water-resistant Mio FUSE offers two modes of tracking — all-day activity or workout only — and uses special sensors that track blood flowing below your skin, providing (it says) an EKG-accurate heart rate that’s the most precise among wrist monitors that don’t require a chest strap. $180, mioglobal.com

Serious Sensor

Adidas’ FIT SMART training device measures your heart rate, calories, pace, distance and stride rate and stores up to 10 hours’ worth of workouts. Plus it synchs with the miCoach Train and Run app where you can access hundreds of free customized training plans tailored to your fitness level. $199, micoach.adidas.com

Noggin Know-How

This first-of-its-kind smart biking helmet by LifeBEAM uses a built-in laser that determines your heart rate from your forehead. What it monitors — your pulse, distance and calories burned — then gets beamed to your smartphone, sports watch or cycling computer. $199, life-beam.com

Phone Friendly

The Razer Nabu fitness band/smartwatch hybrid counts everything from calories burned to hours slept, and it also lists your smartphone notifications, including incoming emails and caller ID (which you can reject by shaking your wrist), and lets you exchange contact info with a friend wearing one by high-fiving them. $99, razerzone.com