Hey John,

This week I've extracted some notes from: The Encyclopedia Of Bodybuilding and Lean Analytics.

Encyclopedia Of Bodybuilding

Muscle fibres are quite simple. A fibre contracts when simulated and relaxes when the stimulation ceases. Contraction of an entire muscle is the result of the contraction of many tiny, individual muscle fibres.

Fibres contract on an all-or-nothing basis. That is they always contract as hard as they can or they don't contract at all. After a series of contractions a fibre begins to get tired and the amount of effort it can generate diminishes.

When you lift a maximum amount of weight one time, you use only a fraction of the total amount of fibre in the muscle.

Lean Analytics

A good metric is comparative. Being able to compare a metric to other time periods, groups, or competitors. i.e: "Increased conversion from last week" is more meaningful than "2% conversion".

A good metric is understandable. If people can't remember it and discuss it, it's much harder to turn a change in the data into a change in the culture.

A good metric is a ratio or rate. Ratios are easier to act on, are inherently comparative, and are also good for comparing factors that are opposed.

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