Here is another curved treadmill that helps you burn a lot more calories than regular motorized treadmills. The Vortex Strength Motorless Curved Speed Treadmill comes with Bluetooth and ANT+ HR connectivity. It has a 6-position intensity lever.
More gadgets like this: here
Vortex Product page - CURVED TREADMILL
The Vortex Strength Treadmill has a low position handlebar for sled workout. It has a 63” x 19” curved running surface that gives you plenty of room for HIIT workout. This treadmill has foot levelers for stability.
[where to get] [official site]
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