What is 12-3-30?
12-3-3- is the viral workout trend that's been popularized on social media. It entails walking on a treadmill at an incline of 12, a speed of 3 mph, for 30 minutes.
Instruction: What is 12-3-30?
Context: 
Response: 12-3-3- is the viral workout trend that's been popularized on social media. It entails walking on a treadmill at an incline of 12, a speed of 3 mph, for 30 minutes.