I think uptempo may also be in some translations of ancient scriptures/stories. Some use sweet spot.
“Pheidippides was hitherto sent from the battlefield of Marathon to Athens to proclaim that the Persians had been defeated in the Battle of Marathon. He was instructed to run at a light-footed pace between a hunters trot and a devils dance; the sweet spot between pleasure and pain. Therefore his message would be delivered as swiftly as a dog shats its dinner.”