Personal Finance & Credit 12-3-30 Treadmill Challenge: Benefits and Risks of the Viral Workout 3 months ago 0 The 12-3-30 treadmill challenge (12% incline, 3 mph, 30 minutes) is viral for a reason: it’s simple,... Read More Read more about 12-3-30 Treadmill Challenge: Benefits and Risks of the Viral Workout
