Yes!

Drink more water, too. During the Tour de France, Hardi and I learned (thanks to the Teevee) that a 20% shortage in fluid levels results in an 80% drop in muscle power!

A way of countering the physical demands is to take a special kind of break afterwards, or before going out to the next gig, or whenever you can. It takes two people. (No, not that! LOL!)

You and your partner can take turns so you each get to recover.

Let's say it's YOUR turn:

You lie down and get as comfy as possible, or snuggle up against your partner in a couch if that's your style. You relax and verbally review the events from which you are recovering... tell where you went as tho your partner has NO idea about any of it.... give details... say how you felt about the small details... and pretty soon you will start to yawn. Go ahead and yawn, talk, yawn, talk.... it may lead to tears or laughter.... that's fine too, tears are good when you are SO tired... Just feel the feelings, observe that someone is paying attention in a safe way, and yawn or weep or laugh.

Your partner simply pays attention, in an attitude of delighted, relaxed interest. No rush, no comments, no advice, no evaluation... just sits there looking and being delighted with you as you yawn away.

Yawning has many functions, most of them well known. In this mode, though, yawning is how we discharge exhaustion just as tears are how we discharge grief and shaking is how we discharge fear.

A lot of the "performance fatigue" is from the saved-up tensions associated with the fatigue, and having to "carry on," while tired, in the past. If you yawn all that off, you will find that ten minutes of this kind of attention feels (afterwards) like a long nap.

When "time" is up switch places. Don't mix the turns-- the one listening has to be really just listening, altho they may yawn along with you and that's fine.

Also when your time is up, the listener should direct your attention to some pleasant, interesting thing in the environment to bring you back to present time, alert. (Unless you can slide into a nap.) Trying to recall song titles from an old CD is also a good attention-upper.

~Susan