At 71 I try to get out 6 days/wk doing 20-25 miles pushing it hard. When the weather is just too bad I put the miles on the trainer in the gym, Fortunately, the guy that owns the gym hasn't shut the doors despite the dictators in charge,
There's never more than 2 or 3 of us over there at one time even in the best of times so it's not like a big deal .
Any time in the saddle is good time out in the fresh air