After five minutes of stretching, I completed four four-minute straight-arm planks with two minutes of recovery. I spent each recovery standing, mobilising and gently stretching my shoulders and wrists.

Four different blocks

The first and second sets were highly controlled, with only mild soreness at the end of the second. The third remained calm and stable.

Some shaking appeared late in the fourth, but it remained manageable. I finished feeling that at least one additional set would have been possible.

More than the personal best—differently

The sixteen accumulated minutes exceeded my fifteen-minute continuous personal best as total session volume. That comparison is useful, but the two achievements are not equivalent: recoveries change the demand.

The value of the day was the ability to repeat high-quality work and recover between blocks, not the claim that sixteen distributed minutes already meant sixteen continuous minutes had become easy.

The effect of recovery

Three consecutive recovery days appear to have had a strongly positive effect. Fatigue stayed broadly stable from the second set through the fourth rather than escalating sharply.

The subjective margin at the end may be more informative than the presence of a small tremor. In endurance work, finishing organised and capable of more is a meaningful sign.

Normalising the effort

I listened to a story about the exploration of the South Pole during the session and exhaled through my nose throughout. Four-minute sets, which would once have appeared demanding, were becoming familiar.

Stopping deliberately with margin was the right decision. The workout delivered a substantial stimulus without being turned into an unscheduled maximal test.

THE TAKEAWAYProgress becomes visible when yesterday’s challenge turns into repeatable work—and you still know when to stop.