The physiological age of our body may be quite different from our numerical age; you’ve seen it in your friends everyone is a similar age and yet some look like they are 10 years older or younger than others. Some of this comes down to genetics but a lot of it can be attributed to the way we lead our lives.
What we put in our bodies and what we put our bodies through, makes a difference to what is called our cellular age. This is the age that your cells operate as despite your actual age and the regulation of calcium influences it. During a HIIT session chemical channels in muscle cells alter their calcium regulation making them more efficient; similar to how they did when the cells (and you) were younger. This is seen even in the 65-80 year old age group.
A HIIT session is purported to be more beneficial to cellular ageing than resistance training alone even though many HIIT sessions involved weights it is not necessarily that which promotes this benefit.
Preventing cellular ageing can make them more resistant to stress and inflammation and increase longevity. Psychological factors may be at hand here too as part of adapting a more active lifestyle will mean that you tend to choose better foods, sleep better and drink less alcohol so the gains can be across the board.
To perform a HIIT session you simply need to incorporate a blast of high intensity working out with a period of less intense exercise and cycle the exercise types for the duration of the session. Often the workouts will fatigue you quickly and may only be 30 minutes long. When you start this kind of training it may be that you can only manage 5-10mins to start with and that is fine! Just weave this type of session in gradually and build up to it over time….after all your going to be around for longer!