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Fred Duncan
@Fred__Duncan
We often talk about hamstring injuries in terms of mechanics and that absolutely matters. But fatigue, and more importantly incomplete recovery, may be just as critical.

Fatigue alone can alter mechanics, and once mechanics break down, the hamstrings often pay the price. A
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Fred Duncan
@Fred__Duncan
disrupted landing sequence places even more stress on the hamstrings.
Now we’re talking load > capacity. That’s where injuries can occur.

Sprint sessions, especially high intensity ones, place enormous demands on the hamstrings. Peak activation. Peak force. High stress
Fred Duncan
@Fred__Duncan
late swing. That’s the main stimulus that day.

So what’s the logic behind stacking 3–4 more posterior-dominant lifts right after?

What are you hoping to achieve?
Can you match the stimulus they just experienced?
Or are you just digging a recovery hole they’ll have to crawl
Fred Duncan
@Fred__Duncan
out of?
After sprinting and lifting, when exactly are they recovered enough to sprint well again?

You should have a reason and a goal behind every exercise. If it doesn’t serve the session or the broader plan, it’s just filler.

My new Speed eBook/Program drops in August.
Fred Duncan
@Fred__Duncan
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