************************** Once this treadmill walking workout becomes *easy for you then its best that you progress to the treadmill running workout, you can walk faster OR you can do the workout on an incline.
This is a 10/10 interval workout on a treadmill which basically means (which you should already know if you watched the video) that you go all out for 10 seconds and then rest for ten seconds and in the case of this treadmill workout you keep repeating that process over & over for 10 minutes.
*You could also do the workout longer than 10 minutes but no longer than 40 minutes once the 10 minute workout gets easy. It's best that you jump off and on the treadmill when switching between the working and non-working parts of this treadmill workout because by the time you speed up or slow down the treadmill the 10 seconds will be quickly over so it's best just to keep your treadmill at the max speed you're going to use throughout the entire workout.
If this workout is truly intense for you meaning that you don't really feel like doing anything at all after you 10-to-40 minute workout then only perform this workout 3-to-4 days per week 1-to-2 times per day but if this workout tends to be too easy for you meaning you can do more than 40 minutes at a time on the treadmill without feeling very tired at all or if you feel like you can easily do some more weight training etc. afterwards then feel free to do this walking treadmill workout more than 4 days per week but...
The fastest way to lose weight is to find something that will burn you out after 20-to-40 minutes that you can do 3-to-4 days per week because the harder something is to do = the longer your metabolism stays up meaning you'll burn fat at rest while you're sleeping, watching TV, at your job and etc.