For me, it depends on how hard I rode the day before. I've done 200 miles and hopped on the bike to do another the next day. After the first few miles, you'd be surprised how quickly you recover. Other times, I've ridden 70 miles and am wiped out the next day.
It's good to do a recovery ride the next day ... truly soft pedaling ... or even go for a hike.
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Proud parent of a happy inner child ...