UPVOTED
HEART-RATE MONITORS
Listen to your heart, there’s nothing else you can do… soChris Rowlandsgets his finger on the pulse
ARM ASSESSORS
The forearm friend
Wahoo Tickr Fit
To smash tennis balls across the court, use your forehand. To wear this optical HRM, complete with 30hr battery life and dual-band connectivity, try your forearm. Worn between wrist and elbow, Wahoo’s mid-limb tracker works with more than 50 fitness apps. £65/uk.wahoofitness.com
The colourful coach
Coospo Realzone HW9
Reckon your Massive Gym Beats playlist gets you in the zone? This armband will tell you for sure. Its five-colour LED tells you which intensity level you’re at: light blue says you’re going easy, while green means you’re right in the window. If it turns red, you might want to ease off. £60/coospo.com