Take the 2-minute tour ×  Does one need to wear tzitzis while
exercising? Isn't it disrespectful to the tzitzis to make them
all sweaty?  share|improve this question  5 Answers 5  First
off: if you exercise at night it's a moot issue, as the mitzva
of tzitzis is only in the daytime.  "Need" is a strong word. The
strict obligation is to put fringes on any four-cornered garment
I may happen to wear. No four-cornered garment, no obligation.
We tend to think of tzitzis as a special ritual garment (like
tefilin), when in fact for thousands of years, it was just about
taking your usual clothing (which, given Biblical fashion, was
usually four-cornered) and putting fringes on it. So certainly
it used to not be disrespectful to get them sweaty.  However,
standard practice today is to opt to wear a four-cornered
garment, fringes attached, when we can, to avoid being shirkers
and to maximize our mitzva observance. "When we can" isn't
clearly defined; if you chose to wear the garment for eight
hours and not wear it for