The Three Energy Systems

Lesson 5

Human Handbook

Explain why brief bursts and sustained activity draw differently on overlapping energy supplies.

Read first

Red Flags & Boundaries

One Currency, Several Supplies

A short burst and a long walk both require muscle contraction, but they ask for energy at different rates. Think of several suppliers feeding the same workshop: some can respond very quickly, while others can sustain a much longer demand.

Lesson 5

Human Handbook

The Three Energy Systems

Explain why brief bursts and sustained activity draw differently on overlapping energy supplies.

Read first

Red Flags & Boundaries

One Currency, Several Supplies

A short burst and a long walk both require muscle contraction, but they ask for energy at different rates. Think of several suppliers feeding the same workshop: some can respond very quickly, while others can sustain a much longer demand.