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ExRx.net

A long-running exercise encyclopaedia with muscle-by-muscle indexes, kinesiology notes and instructions — a reference library rather than a coaching app.

FreemiumToolFitness
Visit ExRx.netMost of the library is free; some sections require membership

What it is

An old-fashioned, deeply indexed exercise directory: pick a muscle, get every exercise that trains it, with mechanics, joint actions and instructions. It looks like it was built in 2003 because much of it was, which is not a criticism.

Best for

Checking your own understanding before you prescribe something, and finding regressions or variations when a client cannot perform the obvious movement.

Watch out for

It is a reference, not a programme. The presentation is dated, and some of the deeper material sits behind a membership.

Recommended for

Alternatives & neighbours

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