When I was working in New York, decades ago, my condo had a lovely gym that was open all night (because it had all-night concierge staffing at the front desk), and I used to use it late at night when I was the only one. The night concierge told me once that I was well-known among the staff as the only person using the gym who never had music on while I was there. I actually liked the silence, because it let me compose draft reports and correspondence in my head.