Treadmill Sprint Intervals

Feel it right

Where you should feel it, the one cue to remember, and quick fixes when you feel it somewhere else.

Feel it somewhere else? Fix it like this

• Feel it in KneesKnee or shin pain from impact. Land softly on the balls of the feet, shorten the stride, or switch to a low-impact version.
• Feel it in Lower backLower back tired. Stand tall, brace lightly, avoid leaning forward.
• Barely felt itNot breathing hard yet? Pick up the pace or add bigger arm movements.
• Joint painSharp or joint pain is a stop sign: end this set, lower the weight, shorten the range — if it repeats, switch to an easier variation.

During a workout we ask after the first set where you felt it and give the fix right away — and remember it for next time.