Living is like riding a fixed gear bike with stirrups.
There is no respite, be it whilst climbing hills or dropping down descents. You’re constantly engaged, so you might as well enjoy the ride, even if sometimes it leaves you short of breath or makes you want to throw up. You’ll survive and be the better for it. Steep climbs will become trivial, and you’ll make the most of the descents.
Company is optional – the ride is mainly solo, although it’s mostly more fun when shared, assuming you can match cadence with that other person.