Why would full body massage cause these symptoms?

Post date: 2021-01-18 07:51:23

My husband gets a full body massage every five weeks. He is a pianist, so there's some emphasis on his back and shoulders, where he tends to "hunch." Upon returning from the massage, he always takes a long nap. That evening and through the night, he'll be beset with chills such that the whole bed shakes. The chills taper off by late the next morning, but he's still pretty wiped out the next day.

What might be causing this? I searched the internet; "massage chills"...nothing. Also not touched on, Metafilter-wise. Is this about water-drinking? His first massage therapist stressed drinking LOTS of water upon returning home; this current one doesn't really mention it.

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