Tendon Health Basics for Heavy Lifters

Muscle adapts to new loading in days. Tendon takes months. That mismatch is where a lot of nagging, hard-to-explain joint pain actually comes from — the muscle got strong enough to move a weight the connective tissue hasn't caught up to yet.

The timing gap

Collagen turnover in tendon is slow, and blood supply to tendon tissue is thin compared to muscle. That's the tradeoff that makes tendons strong: dense, low-vascularity tissue holds tension well, but it also means the growth signal that muscle responds to during a hypertrophy block doesn't translate to the tendon on the same timeline.

What that means in practice

• Collagen synthesis has a timing window. Loading connective tissue roughly an hour before training, paired with a vitamin C source, has real research behind it (Keith Baar's work on collagen synthesis timing is worth reading directly). That's the reasoning behind taking collagen and vitamin C ahead of a session rather than after — the window matters more than the amount.
• Pain isn't the only signal. Tendon issues often show up as stiffness or a dull ache before they show up as sharp pain — by the time it's sharp, load management is usually already behind.
• Exercise order matters too — see Why Pulling Comes Before Pressing for how this plays out in an actual session.

Takeaway

None of this means training around old injuries has to mean training less. It means the timeline for tissue health is longer than the timeline for strength gains, and worth planning for separately — not as an afterthought once something already hurts.