What a tendon actually counts

The most useful thing you can know about connective tissue is that it is not listening to the same instruction as your muscles.

Muscle adapts to effort. Push near your limit, and the signal is unambiguous. Tendon is stubborner and stranger: it responds to the magnitude of strain and to how long that strain is held, and it is largely indifferent to how hard you felt you were working.

The seventy per cent rule is a useful lie

You will hear that tendon remodels above roughly seventy per cent of maximum load. Treat that as a rough marker rather than a threshold. What the tissue is integrating is closer to time spent under meaningful strain — repeated exposures of several seconds, separated by hours, not a single heroic effort.

This is why:

• Fast, bouncy repetitions can feel demanding and leave the tendon barely addressed.
• Slow, heavy holds feel almost boring and remodel it well.
• Six hard sets in one session buy far less than three sets done twice a day.

Where standing practice sits

Standing practice is exceptional at some things. It teaches postural organisation, it trains tonic endurance, it moves blood, and it gives the nervous system hours of quiet feedback about alignment that no other drill provides.

What it does not reliably do is load tendon at the strains that provoke remodelling, or load bone at the strain rates bone responds to. Bone wants novelty and speed; standing offers neither. That is not a criticism of the practice. It is an argument for not asking one practice to do four jobs.

Train for muscle and you will not get tendon for free. Train for tendon and you will not get bone.

What to do about it

Keep the standing. Then add, separately and deliberately:

1. Long holds under real load — thirty to forty-five seconds, heavy, two or three exposures, most days. This is the tendon's meal.
2. Something fast and varied — hops, direction changes, light impacts. This is the bone's.
3. Enough protein and enough sleep that the remodelling can actually happen.

None of this competes with internal practice. It fills the gaps the practice was never designed to fill — which is exactly the point of knowing what each tissue is counting.