An energy audit of your workweek

Focus · 8 min read

Two hours on your calendar are not interchangeable. An hour at your sharpest and an hour in your afternoon slump carry the same label in the calendar app and produce completely different work. Tony Schwartz and Catherine McCarthy made the underlying point in their widely cited Harvard Business Review article "Manage Your Energy, Not Your Time": time is fixed, but energy is not — it can be spent, drained, and renewed. Most people never test that idea against their own week, though. They schedule by availability alone, put the hardest analysis wherever it fits, and conclude they are "not a morning person" or "bad at afternoons" based on vibes. An energy audit replaces the vibes with a week of your own data — and then makes a small number of deliberate swaps.

The three windows: peak, trough, recovery

Daniel Pink's book When popularized a pattern drawn from research on daily rhythms: most people move through the day in three stages — a peak, a trough, and a recovery — while strong night owls tend to run the order in reverse. The stages are not just about feeling awake; each suits a different kind of work. During the peak, vigilance and attention are high, which suits analytic work: tasks that require heads-down focus and batting away distractions. The trough, usually the early to mid-afternoon for day workers, is poor for demanding work and best given to administrative tasks. In the recovery, usually late afternoon and early evening, mood rises again but vigilance stays looser — a combination Pink links to insight and creative work, where being less inhibited is an advantage rather than a flaw.

Two cautions before using this. First, the pattern is a starting hypothesis, not a diagnosis: your peak is wherever your own logged data says it is, which is the entire reason for auditing instead of copying a timetable. Second, be suspicious of precise-sounding productivity statistics attached to this topic online — dramatic percentages about timing are routinely repeated without a checkable source. The audit below deliberately relies on your own measurements plus the broad, well-sourced pattern above, and nothing more exotic.

Run the audit: five days of logging

Recruiters like Robert Walters, writing about "chronoworking," give the standard advice — track your energy highs and lows over a period of weeks in a journal to spot patterns. That advice is sound but incomplete: it names no scoring method, so most people end up with a notebook of feelings and no decision. This version adds the missing pieces — a fixed scale, fixed times, and thresholds you decide in advance.

1. Set your logging times. Choose five checkpoints spread across your working day — for a typical 9-to-5, roughly 9am, 11am, 1pm, 3pm, and 5pm. Set a quiet recurring alarm for each. Five checkpoints for five workdays gives 25 data points: enough to see a pattern, few enough that you will actually do it.
2. Score two things, 1 to 5, in under a minute. At each checkpoint, record alertness (how sharp and vigilant you feel) and mood (how positive you feel), each from 1 (lowest) to 5 (highest). Add one line naming what you were doing in the previous hour — meeting, deep work, email, admin. The activity line matters later, when you check whether a "low-energy hour" was really a low-energy task.
3. Log honestly, including the bad days. A poor night's sleep or a brutal deadline day is not noise to discard; note it in one word ("bad sleep," "launch day"). Patterns that survive your worst days are the ones worth scheduling around.
4. Average each checkpoint across the five days. You now have five average alertness scores and five average mood scores. Rank the checkpoints by alertness.
5. Name your windows using thresholds set now, not vibes. Your peak window is the checkpoint (and the hour or so either side of it) with the highest average alertness, provided it averages at least one full point above your lowest checkpoint — if nothing separates that clearly, log a second week before concluding anything. Your trough is the lowest-alertness checkpoint. Your recovery is the checkpoint after the trough where mood rises while alertness stays below peak — that specific combination is what marks it.
6. Cross-check, optionally, with chronotype. The Morningness-Eveningness questionnaire — suggested by behavioral scientist Amantha Imber as a starting point for structuring a day — categorizes people from definite morning to definite evening types. Use it only as a sanity check: if your log says peak at 10am and the questionnaire calls you a strong evening type, trust the log and log one more week.

What success looks like: a completed grid of 25 scores with activity notes, three named windows with actual clock times attached, and at least one window boundary you did not expect. No surprises at all usually means the logging was too vague — rescore with the activity lines in front of you before giving up on the audit.

Match the work to the window

With windows named, sorting work becomes mechanical:

Notice what the table refuses to do: it does not file recovery under "more admin." Schwartz and McCarthy's framework explains why the recovery window deserves protection rather than leftovers — they identify four sources of energy (physical, emotional, mental, and what they call spiritual, meaning a sense of purpose) and argue each is renewed by deliberate rituals such as brief breaks, reducing interruptions, and spending more time on the work you do best and enjoy most. Creative work in the recovery window is one of those renewing activities for many people; a fourth hour of inbox in that slot is not.

Working around a calendar you do not control

Published chronotype timetables assume a day you can restructure at will. Employees cannot. So the audit ends in negotiation, not redesign, using three decision rules:

• Move first what you own outright. Solo work you scheduled yourself — drafting, analysis, your own review time — can be swapped into the correct window this week, no permission needed. Two or three swaps are enough for the first iteration.
• Negotiate recurring meetings that sit in your peak. A standing meeting parked in your highest-alertness hour is the single most expensive pattern the audit usually finds. You may not win the argument, but proposing a specific alternative time — ideally the other attendees' trough-friendly slot, early afternoon — wins more often than a general complaint about mornings.
• Defend, do not expand. Once a demanding task lands in your peak, protect that block the way you would a meeting: decline collisions, batch the interruptions into the trough. Expanding peak-time commitments until the peak is as fragmented as the rest of the day recreates the original problem.

Review: did the swaps work?

After two weeks on the new arrangement, repeat the logging for two days and compare checkpoint averages against the original audit. You are not looking for higher energy — the swaps do not change your rhythm — but for better placement: demanding work reported in peak hours, trough hours filled with mechanical work, and at least some creative work landing in recovery. If placement improved and the work feels easier to start, keep the arrangement and re-audit in a few months or after any schedule change (a new role, a new shift pattern, a move across time zones). If placement did not improve, the audit still did its job: it showed the constraint is the calendar itself, and the next conversation is with whoever owns it — armed, this time, with data instead of a feeling.

Next: Deep work habits for busy people →