Knees

Has anyone else got twinges in the knees? I’ve been unicycling for just over a
year. Recently I got an ultimate wheel. Riding that gave me sore knees. so I
only ride it for short periods very occasionally.

Now I’ve got sore knees. Could it be from unicycling ordinary unicycles? I’ve
been doing about 1.5 hours a day for 3 or 4 days of the last week.

My main cycle is a 24" Semcycle which I can only raise in 1" steps, so it is
SLIGHTLY too short - nothing major though.

Has anyone else got twinges in the knees? Should I stop unicycling for a while?
How long. I’ve already got to give up juggling 'cos of overuse disorder (aka
RSI). Is nothing fun and safe anymore?

Barry