Training Glossary

An alphabetical list of fitness terms explained in a simple, easy to understand way. To make a suggestion or let me know of a correction, send me a brief email here.

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The natural metabolic state of the body when using fat for energy in the absence of glucose. In this state your body converts fat molecules called Ketones via the liver to be used as fuel.



Sometimes to referred to as the 'satiety hormone', Leptin helps to regulate energy balance by controlling hunger.



Also known as macros are our 3 primary sources of calories. Each macro plays a specific role in the body and provides a number of calories per gram;

  • Protein has 4 calories per gram
  • Fat has 9 calories per gram
  • Carbohydrate has 4 calories per gram

Each of the above macros provides both calories and nutritional value to the body. However, there is a fourth macro that provides calories but no nutritional value; alcohol.

  • Alcohol has 7 calories per gram

Knowing the number of calories provided by each macro allows you to effectively meet your daily calorie needs and in turn; lose, maintain or gain weight.


Non-Exercise Activity Thermogenesis (NEAT)

The name for all the activity you do which is sleeping, eating or exercising. It refers to the kind of job you work, how much you move during the day (i.e. do you take the stairs or the lift), housework and how much you fidget. (1)

It can vary wildly between different people and for some, it can account for a large amount of additional daily calorie output and often explains why some people struggle to put on weight (because they underestimate their calorie needs).


One Rep Max (1RM)

The maximum amount of force that can be produced in one maximal contraction.

Often used as a determinant of total strength with a percentage being used to prescribe the load used when strength training.