If you are flat by Thursday while colleagues seem fine, that is not low stamina and not a bad attitude. A day of meetings costs some people more than others, and the difference is real rather than imagined. The fixable part is whether you get any of it back, not how much it costs.
Most people try to solve this by pushing harder. That is the wrong direction.
The part nobody schedules
Look at how a demanding day is usually planned. The meetings go in the calendar. The presentation goes in the calendar. Recovery goes nowhere, because it is assumed to happen on its own, in gaps that turn out not to exist.
So the cost accumulates. Wednesday's long session is still being paid for on Thursday, and Thursday has its own.
Susan Cain named the missing piece a restorative niche: time and space deliberately set aside to recover after sustained performance, planned rather than hoped for. The word deliberately is doing the work. Twenty minutes you protected is worth more than an afternoon you happened to get.
Why this is not the same as being tired
Worth separating two things, because they need different responses.
Ordinary tiredness comes back after a weekend. If Monday feels like a reset, you are dealing with load rather than something structural.
Burnout does not work that way. Christina Maslach built the standard measure of it in 1981 and it is still the field standard. It has three separate parts: exhaustion, growing cynicism about the work, and a dropping sense that you are any good at your job. That last one is what makes it dangerous, because it does not feel like exhaustion from the inside. It feels like evidence you are not capable.
If you have started thinking you have lost your edge, check the calendar before you believe it. Competence rarely disappears in a quarter. Capacity does.
What actually restores it
Two things with real evidence behind them, and neither is a wellness programme.
Recovery works when it is protected and when it fits how you actually recharge. For most people who find sustained talking depleting, that means genuine quiet rather than a different kind of social. Lunch with a colleague is more of the same in a nicer room, not recovery from a morning of meetings.
Visible progress matters more than most people expect. Teresa Amabile and Steven Kramer went through nearly twelve thousand diary entries from 238 people, and the single strongest driver of a good day was making real progress on work that mattered. Not recognition, not perks. Movement. A week of interruptions with nothing finished is draining in a way that a hard week with something completed is not.
Which means one of the most restorative things available is protecting a block of uninterrupted time to finish something. That is the thing the evidence points at most directly, not indulgence.
Where to start
Look at last week rather than planning next week. Find the single most depleting hour, the one you were recovering from afterwards.
Then put twenty minutes after it in the calendar, before anything else claims that slot. Not a break in principle. An entry, with a name, that a colleague would have to actively take from you.
Do that for one recurring thing. If it holds for a fortnight, add a second.
This will not feel like enough, and it is worth doing anyway. Jan-Emmanuel De Neve's team at Oxford, working with roughly seventeen million survey responses, keeps finding the same thing: protecting wellbeing is an input to output, not a subtraction from it. Twenty minutes is what makes the next three hours worth anything, not time taken from the work.
Capacity is a resource that runs down and can be deliberately put back, not something fixed and not simply a measure of how much you want this. Almost nobody is taught the second half.