physiology
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5 km run 0 seconds

Follow a representative 5 km run and the hour it takes the body to settle again.

Representative model
Change event
Representative whole-body physiology diagramActive organs become brighter as the timeline moves.

Interactive 3D is loading into this same frame contract.

00:00:00
  • First strides · 00:00:00
  • Breathing catches up · 00:02:00
  • Steady effort · 00:10:00
  • Last strides · 00:30:00
  • Early recovery · 00:40:00
  • Later recovery · 01:00:00
Happening now

The run has just begun; the displayed values are still close to the resting reference state.

Explore the mechanism The demand rises

From the first strides the leg muscles need far more energy each second than they did at rest, and the systems that supply them begin to scale up.

Evidence for this step

Muscle contraction typically increases glucose uptake into working muscle by moving GLUT4 transporters to the cell surface, by a route separate from the one insulin acts through, and circulating insulin usually falls during aerobic exercise. moderate · View sources

Time: 0 seconds. Milestone: First strides. Active anatomy: Working skeletal muscle, Left lung. Metrics: Breathing rate: typically between 12 and 20 breaths/min; Blood oxygen saturation: typically between 0.96 and 0.99 of 1; Blood glucose: typically between 75 and 95 mg/dL
  • Whole-body context: 0%
  • Working skeletal muscle: 15%
  • Left lung: 20%
  • Right lung: 20%
  • Airways: 20%
  • Bloodstream: 20%
  • Liver: 20%