1 repetition maximum

The maximum amount of weight you can lift on one attempt

Spike

A sudden, specific increase caused by a certain stimulus

Endocrine system

The system that orchestrates chemical communication in the body produced by hormones

DNA

A sequence of molecules (nucleic acids) found in the nuclei of all cells. DNA stores the genetic code, which is the blueprint for genetic make-up

Body mass index (BMI)

A mathematical formula that expresses the relationship between height and weight, defined as weight in kilograms divided by height in metres squared (ie kg/m2)

Subcutaneous

Just below the skin

Subscapular

An area just below the bottom of the scapular (shoulder blade)

Suprailiac

An area just above the hip bone, level with a vertical line taken from the front of the shoulder