• Improves health as with any form of physical activity.
• May build some lower body muscle. You could build some lower body muscle and increase strength. Walking at an incline activates your hamstrings, quads, glutes, hip, knee, and ankle flexors.
• Increases daily energy expenditure. Each 1% incline grade burns about ten additional calories per mile for a 150-pound person.
• Provides a joint-friendly and low-impact alternative cardiovascular workout.

The 12-3-30 workout is a treadmill-based workout routine that claims to boost weight loss and burn calories.

The workout on the treadmill involves:

• Walking at an incline level of 12
• The speed setting of 3 mil...