To evaluate these bottles for everyday fitness use, I took each to a high-intensity workout class at a gym where I did 45 minutes of challenging exercise, sometimes with weights.

Accountability Pick: Thermos Nissan Intak Water Bottle (24 oz.) Photo: Amy Jamieson Price paid: $23 Where to buy: Amazon, Bed Bath & Beyond, Staples Empty weight: 5.1 ounces Capacity: 24 ounces ...

Hydracy Water Bottle with Storage Sleeve and Straw - Large Half Gallon 78 oz BPA Free Motivational Jug with Handle & Time Marker - Leak Proof Gym Bottle - Ideal Gift for Fitness or Sports & Outdoors ...

Nestle has revealed it is developing 'exercise in a bottle' at its Geneva lab. It hopes to create a drink or pill that burns fat in the same way that a workout does.