Have you recently started to exercise on weekdays only to discover that this is something that is actually reducing your comfort levels in life instead of increasing them in the way that you might have initially been hoping for? The main contributing factor to people feeling like exercise reduces their quality of life despite them believing that it would increase it is that it can sometimes lead to unexpected consequences with knee pain being particularly prominent in that respect at the end of the day.
If you are the sort of person that recently bought a high end treadmill from thebikersride.com and felt your knees buckling or aching when you tried to use it, suffice it to say that this might have more to do with your form while exercising rather than an inherent fault in the machine itself. People that have only just started exercising for the first time in their life might not keep their posture upright, and that is the sort of mistake that can lead to your body having to make last minute adjustments with much of the strain being taken up by your knees and lower back.
The best way to prevent your knees hurting on a treadmill is to ensure that you keep the right form no matter how tired you are. If you feel like you are too tired to keep your back straight, you might just be better off calling it a day and slowly improving your stamina instead of attempting to push on because that might result in long term knee damage occurring that you would really struggle to recover from. Curved treadmills can also be useful for preventing knee pain.