Not having an hour of uninterrupted leisure time per day, never mind per week (most Finns don’t go to sauna every day) still sounds pretty unfathomable, except maybe in some specific circumstances like being a fresh single parent or similar. In any case, in Finland people go to sauna together with even fairly young kids (like 3+ years old), with breaks as needed of course, even most adults don’t usually spend thirty continuous minutes in a 80°C sauna.