What about if I’m sweaty? Will that interfere with the signal? Shayna April 07, 2021 22:20 Updated Another great question! No, the signal will be fine if you’re sweaty. Related articles Can I wear it while I run? Can I wash the band? What’s the difference between Relax and Calm? How do I know when it needs to be charged? Is it bad to have these electromagnetic waves around my brain? Comments 0 comments Article is closed for comments.