Who these sessions are for

These are for anyone who trains regularly and has a trip ahead: a work week in a hotel, a holiday, a few weeks away from the usual gym. On the road the aim is to keep what you built, not to set records. Three routines in Trenno’s Explore are written for it: “Hotel Gym: Dumbbells Only” for the small gym whose rack stops at the light dumbbells, “Travel Bodyweight Circuit” for a hotel room or a park, and “Resistance Band Full-Body” for a band in the suitcase.

How much training keeps what you built

Less than most lifters fear. A review of the minimal dose found that strength and muscle size, at least in younger adults, were kept for up to 32 weeks with one strength session a week and one set per exercise, as long as the load stayed heavy for the person lifting it. Older adults may need two sessions a week and two or three sets per exercise. Endurance held for up to 15 weeks on as few as two sessions a week, or on sessions cut to 13 to 26 minutes, as long as the intensity stayed the same (Spiering and colleagues, 2021).

In one trial, 70 adults trained three days a week for 16 weeks, then stopped or went on with a third or a ninth of the work for 32 weeks. Both reduced doses kept the young adults’ muscle size; the older adults needed more. Even the group that stopped kept most of its strength until the last measurement, when it dipped slightly (Bickel and colleagues, 2011). And in 14 young men who trained the bench press, 6-week blocks with 3 weeks off between them built as much muscle and strength over 24 weeks as training straight through (Ogasawara and colleagues, 2013).

Trip Sessions a week What to do
Up to a week None needed, one if you like Walk; one session keeps the habit
One to four weeks Two Dumbbells Only in the gym, or the circuit in the room
Longer Two or three The same, or a full plan for the kit you have

For a longer stay, the dumbbell workout plan, the bodyweight workout plan and the resistance band workout are full weeks built for that kit.

The three sessions

In the hotel gym: dumbbells only

“Hotel Gym: Dumbbells Only”, as it stands in Explore: high reps and one limb at a time, because the dumbbells stop early.

Exercise Sets Rest
Dumbbell Split Squat 3 × 10 to 15 a leg 1:30
Dumbbell Romanian Deadlift 3 × 12 to 15 1:30
Dumbbell Bench Press 3 × 12 to 15 1:30
One-Arm Dumbbell Row 3 × 10 to 15 an arm 1:30
Dumbbell Lateral Raise 3 × 15 to 20 1:00

A bench helps; where there is none, the Dumbbell Floor Press stands in for the bench press, and a chair takes the free hand in the row.

In the room: the bodyweight circuit

“Travel Bodyweight Circuit”: no equipment and no jumping, so it suits a hotel room with neighbors below. The five exercises run as one round, 15 seconds between them and 1:30 after the last; three rounds make the session.

Exercise Each round
Bodyweight Squat 15 to 20
Push-Up 8 to 15
Reverse Lunge 10 to 14, both legs counted together
Glute Bridge 12 to 20
Plank 40 sec

Add a fourth round once three stop being hard. If there is a bar in a park nearby, a set of pull-ups each round covers the pulling the circuit leaves out.

With a band in the suitcase

“Resistance Band Full-Body” takes one long loop band and nothing else: seven exercises, 21 sets. Its table, and how to pick the band, are in our resistance band workout.

How the week works

For a one-week trip with a hotel gym:

Day With a hotel gym Room only
Monday Dumbbells Only Travel Bodyweight Circuit
Tuesday Walk Walk
Wednesday Walk Walk
Thursday Dumbbells Only Travel Bodyweight Circuit
Friday to Sunday Walk Walk

Any two days with two or three between them will do; the days of meetings or long flights decide where they fall. If your usual plan trains four days a week, two on the road is enough to keep it.

Sets, reps, rest and effort

  • Sets: 3 of everything, 15 a session.
  • Reps: high, from 10 to 20, because the weights are light. One-sided exercises load each leg or arm with the whole dumbbell, which makes a light one count for more.
  • Rest: 1:30, 1:00 after the lateral raise.
  • Effort: end each set with one or two clean reps left. Light weights only work when the sets are hard.

That last point carries the plan. The review above found intensity, the load relative to your strength, to be the key to keeping what you built, and hotel dumbbells are often too light for it. Hard sets are the way round: light loads grow muscle as well as heavy ones when the sets are taken close to failure, although heavy loads build more maximal strength (Schoenfeld and colleagues, 2017).

When the dumbbells are too light

Exercise Harder with the same dumbbells
Dumbbell Split Squat Bulgarian Split Squat, the back foot on a bench
Dumbbell Romanian Deadlift Single-Leg Dumbbell Romanian Deadlift
Dumbbell Bench Press Three seconds down and a pause at the chest
One-Arm Dumbbell Row A two-second pause at the top
Dumbbell Lateral Raise Reps to the top of the range, then a fourth set

Slow the lowering before anything else: it is the step that needs no new exercise.

How long a session takes

Counted at about 40 seconds a set, each leg or arm of a one-sided set and the rest the routine prescribes after every set: “Hotel Gym: Dumbbells Only” takes about 35 minutes. The circuit takes about 17 and a half, with 15 seconds to move between exercises and 1:30 after each round. The band routine takes about 39.

Common mistakes

  • Treating the trip as a test. The goal is to keep, so leave the records at home.
  • Skipping everything because the gym is small. Two sessions with light dumbbells keep more than none with heavy ones you do not have.
  • Training hard off a long flight. On a travel day, a walk is plenty; train the next day.
  • Not logging. The log is how you see, after the trip, that nothing was lost.

FAQ

How quickly do you lose muscle when you stop training?

Slower than it feels. In the trial above, adults who stopped for 32 weeks kept most of their strength until the end, and in the bench press study, 3-week breaks cost young men nothing over 24 weeks.

Is one workout a week enough to maintain muscle?

For younger adults, yes, in the review above: one session a week with one hard set per exercise. Older adults may need two sessions and two or three sets.

What if my hotel has no gym?

Run the circuit in the room, or pack a band. Both keep the whole body trained.

Can I build muscle on a trip?

Some, if the sets are hard and the trip is long. Plan to keep what you have and count anything more as a bonus.

Sources

All three routines are in Trenno’s Explore. The one-sided exercises get a set for each side, marked left and right, and the previous session’s sets show beside the empty ones, so the first session back home starts from the numbers you left with.