The trouble is, with so many things you can measure where should you start?
Do you measure height, weight, waist:hip ratios, BMI, spinal curvature, 1.5 mile run time, lung function, metabolic rate, grip strength, core function, blood pressure, 1 Rep Max, etc, etc…
The list goes on and on!
To be honest, almost any measurement you take or have measured can have some benefit but what should be used to determine whether or not you bother with it is the relevance of that measurement to your chosen outcome goal.
NOTE: Your Outcome Goal is the thing you’re trying to achieve. e.g. Lose 30lbs, Squat 2x your body weight, get a 6-pack, etc.
As I like to keep things as simple as possible for me and my clients, when it comes to training for success and measuring that success in relation to your body transformation (whether fat loss, muscle gain or both), there are 5 main measurements I use to help guide my recommendations.