Coming back after five weeks off

Five weeks. A work trip, then a cold, then the week you meant to go and didn't. Now you're back in the gym, the app is showing you numbers from early September, and you have a decision: pick up where you left off, or start over.

I've done both, and both are wrong. Picking up where I left off is how I used to get hurt: 270 for four on a lift I hadn't touched in a month, because that's what the last page in the log said. Starting over is how I used to quit: three weeks of light sessions that felt pointless, then nothing.

What five weeks actually costs

Less than it feels like. Mujika and Padilla's reviews of detraining, the ones most strength coaches still cite, found that strength holds for roughly the first three to four weeks of doing nothing, then slides slowly rather than collapsing. McMaster's 2013 review of strength athletes put the loss somewhere between five and sixteen percent across weeks five to sixteen. Bickel's 2011 study found that about a ninth of your usual training volume was enough to hold muscle for months, which is why the two hotel-gym sessions on that trip counted for more than you think.

Then there's the part everyone calls muscle memory. It's real, and it isn't magic. A muscle you've trained keeps extra nuclei and, as Seaborne and colleagues showed in 2018, an epigenetic record of the work, so retraining goes faster than the first time did. The strength comes back in weeks, not months.

What you lose first isn't the strength. It's the tolerance for volume. The lift will be there. Your ability to do four hard sets of it without being wrecked for three days won't be.

What a good trainer does

They don't let you test anything in week one. They take the last weights you did, knock some off, and run you through the full session at a lower effort, with reps in reserve on every set. The second session goes a little heavier. By week three or four you're back on the plan, and you got there without a week of walking down stairs sideways.

They also pay attention to which five weeks it was. Five weeks of a cold on the couch and five weeks of hiking every day are different starting points, and the only way to know is to ask.

What Stay Ready does on day one

Nothing changes for the first three weeks away. A holiday is not a layoff, and the app doesn't treat it as one.

Past three weeks, the prescription eases back by four percent a week off the last load you trained, and never below three quarters of it. Five weeks is two weeks past the line, so eight percent: a 200 lb working weight comes back at about 185, rounded to the plates you have. Tap "Why this?" and it says so in plain words: eased back 8%, it's been five weeks since you last trained this.

That first session is the real information. Every set you log becomes the new anchor, so the second session is built from what you did this week, not from the calendar. If the eased weight moved easily, the next prescription climbs. If it didn't, it holds. The lift calculator on this site runs the same numbers if you want to see how a logged set turns into a prescription.

If the break was long enough that you want a proper runway, choose "Come back after a break" when you start a new program. The block is built as a four-week ramp: half the usual volume in week one, two thirds in week two, then four fifths, then full, with the effort rising from five reps in reserve to two. There's no deload week, because the whole block is one.

Your HP score doesn't punish you either. A lift you proved counts in full for four weeks, then fades slowly: about 97% at five weeks, 88% at eight, 80% at twelve. Any work on that movement pattern holds the old proof at 95%. The number slides a little while you're away and climbs back as you prove it again, which is roughly what the research says your strength is doing.

What it won't do

It can't see what the five weeks were. If you hiked every day, say so in the check-in and push the first session's weights up yourself. If you were in bed, the eased weight might still be too much, and the honest thing is to log the set you actually did, not the set that was planned. The app re-plans from the truth.

It also won't tell you how long until you're back. Nobody can, and anyone who does is guessing.

The chapter on when life gets in the way covers missed weeks, sick weeks and the rest. If you're not in yet, the waitlist is on the home page.