[lm28469]

> be bad for one's back and knees?

"This can't be good for your body" is a bullshit excuse most of the time, I have 1 in a million chance to pulling a muscle while deadlifting, but someone who sits all day and don't exercise has 1 in 1 chance of slowly rotting away day by day, pick your poison. Unless you morbidly obese I don't think a 10kg backpack will be the straw that breaks the camel's back

Most people got it backwards, your knees and back don't hurt because you overused them, they hurt because they're grossly underused.

[0_____0]

I do 10-15 hours of cardio a week lol. I make an effort to take care of my knees because at those training loads, having bad bike fit or an uncorrected varus knee issue can mean really messing things up for yourself.

My question was how much weight is necessary. Also curious whether that applies on the flat or only on incline, and whether a similar training load could be accomplished with lower joint stress by doing unloaded runs and weight room stuff.

[arp242]

It's not like "sit still all day" is the only other possible option.