The straight-arm session combined one longer opening hold with two five-minute blocks. Two minutes separated the sets, and breathing remained exclusively nasal throughout.

The first eight

Rigidity began during the first set at approximately minute six. I nevertheless completed all eight minutes before moving into the two shorter holds.

The longer uninterrupted block made the workout more specific than the previous day’s five-by-four session, even though total plank volume was slightly lower.

Five and five

After two minutes of recovery, I completed the first five-minute set and then repeated it after the same break.

The full plank volume reached eighteen minutes. The session was harder than the preceding day, but I still felt capable of another five-minute set at the end.

One thousand metres

I then swam one thousand metres in a fifty-metre pool. My arms were sore at first, but they gradually loosened as the swim continued.

A moment of doubt appeared around seven hundred metres. The sensations recovered, and I finished the distance with further margin available.

Specificity and recovery

Heavy sweating at the end reflected a more demanding overall session. The useful result was the ability to recover enough after the plank to complete the swim without turning either part into a failure.

The next day called for active recovery rather than another escalation: mobility, three controlled four-minute holds and easy swimming without a performance target.

THE TAKEAWAYThe long opening hold moved the training closer to the goal; the pool showed what remained after the specific work was done.