This session followed a demanding ten-kilometre run with 482 metres of elevation gain. Five minutes of shoulder and wrist mobility preceded the plank work.

A controlled first four

The first straight-arm hold lasted four minutes. Pressure through the palms was present but manageable, and general control remained good.

Two minutes of recovery led into six minutes on the forearms.

Muscle versus joint

The forearm block felt more uncomfortable than usual and involved a stronger muscular demand. There was no opening into ease.

By contrast, the later straight-arm hold felt more limited by joint loading than by muscular fatigue. The distinction became especially clear during its final minute.

Five minutes to finish

The second straight-arm block lasted five minutes. It remained manageable, although the final minute required more attention.

The system stayed stable despite the earlier running load, suggesting that the two forms of work were not creating exactly the same fatigue.

Active unloading

Two inclined planks of two minutes closed the session with good technical control.

The day offered a useful observation: fatigue is not one single quantity. Its location and character can change how the same plank position is experienced.

THE TAKEAWAYA hard day is easier to understand when fatigue is described precisely: muscular, joint-related and systemic are not interchangeable.