High-Intensity Interval Training (HIIT) sessions have become very popular because they are short, sharp and produce significant training effects. But the question is: do you get more benefit from them if they last an hour?
That is an important question. HIIT sessions are designed to be carried out at near maximal intensity in the anaerobic zone. It’s the intensity that’s needed to stimulate cellular pathways and produce the desired training effects.
If you can have a HIIT session for an hour then you aren’t training in the right zone. Subsequently, HIIT sessions by their very nature have to be short and sharp and should last up to half an hour. Keep in mind that two HIIT sessions a week suffice and they should only be a part of your training.
And don’t neglect long runs, swims, bike rides and weight training as these will also get you fit and lower the risk of an injury.