Double Workout Routine: How to Train Twice a Day

Quick answer: A double workout routine splits one day's training into two shorter sessions, usually morning and evening, at least three hours apart. It works when you keep the total volume the same and only spread it out. Done that way, small studies show equal or slightly better strength gains, and one crossover study found the split days felt less effortful.

You have forty minutes before work and another forty after. Neither slot fits your whole session, so you squeeze everything into one rushed hour and skip the last two exercises.

Splitting the day in two is the other option. It sounds extreme, and for most people it is unnecessary. For some schedules, though, it is the plan that actually gets done.

The wording trips people up. A double workout routine means two sessions in one day. If you are looking for training twice a week, that is a 2-day workout split, which is a different plan.

What is a double workout routine?

A double workout routine is two training sessions on the same day. Coaches and athletes call them "two-a-days" or "doubles". A 2 a day workout is the same thing: one session in the morning, one in the afternoon or evening, with a rest gap in between.

There are two versions, and they are not the same plan:

• Split volume. You take one normal day of training and divide it across two sessions. Total sets stay the same.
• Added volume. You keep your normal session and bolt a second one on top. Total sets go up.

Most of the research below tests the first version, though the Corrêa trial does not say whether total volume was matched. The second is where overtraining comes from.

Does training twice a day build more muscle?

Splitting the same volume across two sessions can help strength, and it does not hurt muscle growth. The evidence is thin, and it mostly points the same way.

In a 1994 study in Electromyography and Clinical Neurophysiology, Häkkinen and Kallinen had ten trained female athletes train once a day for three weeks, then twice a day for three weeks with the same total volume. Nothing changed significantly in the once-daily phase. In the twice-daily phase, maximal strength and quadriceps cross-sectional area both rose. There was no comparison group, and the twice-daily phase always came second, so some of that gain may be carry-over from the first three weeks.

A 2022 trial by Corrêa and colleagues in The Journal of Sports Medicine and Physical Fitness ran 23 trained men for eight weeks. The twice-daily group improved their back squat 1RM by 16.1%, against 7.8% for the once-daily group. Bench press, muscular endurance and muscle thickness improved in both groups with no difference between them. Each muscle was trained twice a day in that trial, and the extra gain showed up only in the squat.

Not every study agrees. Hartman and colleagues put ten national-level weightlifters on once-daily or twice-daily training for three weeks and found no significant differences on any measure. The authors still suggested splitting the load might lower overtraining risk.

Taken together, these three studies suggest that splitting the same volume into two daily sessions does not reduce strength or muscle growth, and may add a little strength. All three are small and short, so treat that as tentative.

Is it OK to go to the gym twice a day?

Going to the gym twice a day is fine when the second session replaces part of your normal workout rather than adding to it. The usual problem is extra volume that creeps in because you are at the gym anyway.

In a 2022 crossover study in Frontiers in Psychology, Pedersen and colleagues had 23 trained women do the same lower-body program either as one 46-minute session or as two shorter sessions 3.5 to 5 hours apart. The split days produced 3% more total reps and felt less effortful. Readiness to train the next day was the same either way.

Even so, 22 of the 23 women preferred the single long session. Two sessions mean two warm-ups, two changes of clothes and two trips, and a slightly better plan you abandon is worse than a plain one you keep.

That makes the double workout routine a scheduling tool. It suits:

• People with two short windows rather than one long one.
• Lifters who also do cardio and want to keep the two apart.
• Anyone whose sessions run long, where the last exercises are done tired every time. If your workouts drift past the mark in how long a workout should be, splitting them is a cleaner fix than cutting exercises.

How should you split the two sessions?

Pick the split that matches why you are training twice. There are three common shapes.

Lifting and cardio in separate sessions

For most people this is the most useful version. A 2022 meta-analysis in Sports Medicine by Schumann and colleagues found that cardio alongside lifting did not reduce muscle growth or maximal strength. Explosive strength did suffer, and the drop was only significant when both were done in the same session, not when they were at least three hours apart.

If you run or cycle as well as lift, separating them is the best-supported reason to go double.

Upper body in the morning, lower body in the evening

This takes a full-body day and halves it. Each session is shorter, and each half of the body gets trained while you are fresh.

Heavy compounds in the morning, accessories in the evening

Do your main lifts while you are fresh, then come back later for curls, raises and core work. This fixes the common problem of rushing isolation work at the end of a long session.

What does a double workout plan for the week look like?

Use doubles on two or three days, not every day. A sample week, with 3 sets of 6 to 12 reps for each lifting exercise:

The weekly set count should look like what you would do on one session a day. If you are unsure what that number is, check it against how many sets per week build muscle, or get a free private link to the workout plan optimizer, which maps the weekly volume your plan gives each muscle.

The days off matter as much as the doubles. For how many training days to use in the first place, see how many days a week you should go to the gym.

How do you recover between two workouts?

Leave at least three hours between sessions, and eat in the gap. The one split-lifting study above that reports a gap, the Frontiers in Psychology crossover, used 3.5 to 5 hours. The three-hour mark comes from the Sports Medicine meta-analysis on cardio and lifting. With a much shorter gap, you are mostly still tired from the first session.

• Eat a real meal between sessions. Training twice a day is one of the few cases where meal timing after lifting matters, as the anabolic window explains.
• Keep the second session no longer than the first. You start it with some of the first session's fatigue still in your muscles.
• Watch the trend, not the day. If your main lifts stall for two weeks running, take a deload week before blaming the plan.

How do you log two workouts in one day?

Write them as two separate entries with the time on each. Merging them into one note makes it impossible to tell later whether a weak set came from the morning or the evening.

A simple starting plan

1. Pick one reason to go double. Cardio separation, two short time slots or overlong sessions. If none applies, stay on one session a day.
2. Split, do not add. Take an existing day and divide its sets across two sessions.
3. Start with two double days a week, three to five hours apart, and keep the rest single or off.
4. Log both sessions separately, with the time, so you can compare them.
5. Review after four weeks. If your main lifts are moving and you still turn up for the second session, keep it.

Keep both sessions in the notes you already use

Most people who try doubles already log in a notes app or a notebook. That works until you want to know whether the evening sessions are actually moving or just filling time.

Gym Note Plus reads the same plain-text lines you already type and turns them into tracked sets.

• Type squat 80kg 8,8,6 and it becomes structured, charted data.
• Morning and evening sessions stay as separate workouts, so you can see which one is doing the work.
• Old notes import, so the sessions you already logged still count.

Paste one of your sessions into the free notes to workout translator to see what your own shorthand becomes.

Two sessions a day help when they split work you were already doing. Use the second trip to fit your schedule, and keep the weekly total where it was.

Frequently Asked Questions

Is it OK to go to the gym twice a day?

Going to the gym twice a day is fine for trained lifters when the second session replaces part of the first. A 2022 Frontiers in Psychology study of 23 trained women found two short sessions produced slightly more reps than one long one, with equal readiness the next day. The risk is extra volume, not the second trip.

What is a 2 a day workout?

A 2 a day workout is two training sessions on the same day, usually one in the morning and one in the afternoon or evening, separated by several hours. Athletes use two-a-days to spread out heavy training or to separate lifting from cardio. It is different from a 2-day split, which means training twice a week.

Is a double workout routine better than one long session?

A double workout routine is at least as good as one long session in the small studies so far. Häkkinen and Kallinen (1994) and Corrêa and colleagues (2022) found larger strength gains with two daily sessions, while Hartman and colleagues (2007) found no difference. None reported less muscle growth. Choose the schedule you will keep.

How long should you wait between two workouts in one day?

Wait at least three hours between two workouts in one day. In a 2022 Sports Medicine meta-analysis, explosive strength was only significantly blunted when cardio and lifting shared a session, not when they were three or more hours apart. The one split-lifting trial that reported a gap used 3.5 to 5 hours. Eat a proper meal in between.

Can beginners do a double workout routine?

Beginners rarely need a double workout routine. A beginner gains strength quickly from one session a day, three or four days a week, and the extra logistics of two sessions add little. Two-a-days make more sense once sessions regularly run long or once cardio training starts to compete with lifting for time and energy.

Final Takeaways

• A double workout routine means two sessions in one day, not two days a week.
• Split your volume, never double it. That is the version most of the research tested.
• Strength gains were equal or larger with two sessions in the studies above, though all of them were small and short.
• Lift and do cardio at least three hours apart to protect explosive strength.
• Log each session separately so you can tell which one is pulling its weight.