Think of 400m Over/Unders as gear-shifting for your legs! Instead of running at one flat speed, you alternate between two gears over 400m distance.
The "Over" (Fast Gear): Pick up the pace and run faster than your usual target speed—getting your heart pumping and legs moving quickly!
The "Under" (Steady Gear): Drop back down to a comfortable, steady groove to let your body catch its breath slightly without coming to a full stop.
After completing a full set of "Over" and "Under" efforts, you get a full 2 minutes of complete recovery (walk) to reset before diving into the next one.
Why You’ll Love It (The Benefits)
Supercharges Your "Lactate Engine": Think of lactate as secondary rocket fuel, not a waste product! Pushing "Over" floods your muscles with energy byproducts, while dropping "Under" forces your body to process and reuse that fuel on the fly—turning you into a far more efficient running machine.
Tailored for Everyone: "Fast" and "Steady" are completely unique to you. Whether you’re fresh off the couch or training for a race, you choose the speeds that feel right for your current fitness.
Builds Speed Without the Burnout: Shifting gears keeps your brain and muscles engaged, making the workout fly by compared to single-pace running.
Teaches "On-the-Move" Recovery: The 2-minute break resets your system completely, while the "Under" segment trains your mind and body to catch a breath without actually stopping—a massive mental boost for hilly or race-day runs!
