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Is a Manual Treadmill Better Than Electric? Manual treadmills do not come with motors that power them, they run only on the energy you have. This type of treadmill is typically a better option for runners since it can help you to run faster. If you're looking to raise your heart rate to higher zones at lower speeds, consider a flat belt or curved manual treadmill. Here are to consider. 1. It's More Challenging If you're looking to add some serious chal