Can the minutes between lifting sets help you build conditioning while keeping strength work productive? For some workouts, yes. The idea is to use a carefully chosen, low-fatigue activity during part of the rest period, then leave enough time to recover before the next set. This can make a session more time-efficient, but the lifting still sets the pace.
Rest has a job
Heavy lifting requires recovery. If you replace every rest period with hard cardio, your next set may suffer. The goal is not to keep your heart rate as high as possible; it is to add useful aerobic work without losing repetitions, load, technique, or force production. Longer recovery is especially valuable for demanding compound lifts and strength-focused sets. Research on near-maximal lifting shows that recovery needs differ by exercise.
What “active recovery between sets” means here
After a working set, move to an easy, low-impact aerobic modality for a short interval, then take a quiet transition before lifting again. Choose a modality that does not heavily tax the muscle group you are about to train. For example:
- Leg day: a gentle SkiErg interval can add upper-body aerobic work between selected lower-body sets.
- Back day: easy cycling may fit between back sets because the prime movers differ.
- Upper-body day: light stationary cycling is another option if it does not make you breathless before the next lift.
These are programming examples, not tested formulas. Even a SkiErg uses the trunk and legs to some degree, and cycling after heavy leg work can still add local fatigue. Match the effort to the day and monitor the next set.
Why this can help a fat-loss plan
Using some otherwise idle time for aerobic work can increase the amount of activity you complete within a fixed session. Over weeks, that can support conditioning and energy expenditure while resistance training provides a reason to retain muscle during a calorie deficit. It does not create a special fat-burning effect: nutrition, total activity, and a sustainable calorie deficit still determine fat loss. Start with APP’s free macros calculator and Weight Loss Blueprint if you need a practical framework for the nutrition side.
The three major energy systems all contribute to exercise; lifting and short, hard efforts emphasize different demands than steady aerobic work. A mixed session can train several qualities, but it does not mean each system receives an optimal, separate stimulus. Keep a dedicated aerobic session when endurance is a priority.
What the research actually supports
In a small study of 12 male student athletes, low-intensity cycling between squat sets produced no significant change in force, power, or work versus passive rest. It also did not improve lactate clearance. That suggests easy movement can sometimes fit without an immediate performance penalty; it does not prove superior fat loss or long-term strength gains. Mohamad and colleagues, 2012.
A 2025 randomized crossover study in 14 resistance-trained young men compared light chest-press activity with passive rest during two-minute bench-press intervals. Differences in velocity loss and lactate were not statistically significant. It is a useful feasibility signal, not proof that active rest improves performance. Berlanga and colleagues, 2025.
Over longer training periods, combining aerobic and strength work has a mixed evidence base. A 12-week study in recreationally active adults found comparable strength and muscle-size gains whether aerobic intervals targeted the same or a separate muscle group, compared with strength training alone. The researchers did not test brief cardio between every set, so this finding cannot validate a specific SkiErg or bike pairing. Feuerbacher and colleagues, 2025. Other research finds that doing aerobic and strength work with no separation can reduce some strength gains compared with spacing them by six or more hours, so workload and recovery matter. Robineau and colleagues, 2016.
A practical way to try it
- Do your warm-up and priority heavy sets with conventional rest first.
- During selected later sets, try 30–90 seconds of genuinely easy, noncompeting movement. Keep enough of the rest interval quiet so breathing and grip are ready for the next lift.
- Compare load, repetitions, perceived effort, and technique with your normal sessions. If they decline, reduce the aerobic dose or return to passive rest.
- Build gradually rather than turning every set into a sprint. Save hard intervals for a planned conditioning block or a separate day.
One weekly structure is three or four mixed lifting/conditioning days, plus two days with dedicated easy aerobic work and lifting later after meals and recovery. Separating sessions can make it easier to protect lifting quality. Fasted zone 2 is a scheduling preference; fasting itself has not been shown to confer a unique long-term fat-loss advantage when overall energy intake is matched.
The takeaway
Rest periods can be useful training time when the added work does not compromise the next set. Pairing different muscle demands is a sensible starting point, then let performance and recovery decide the dose. For a broader plan, see APP’s free training and nutrition resources and video library.
Research references
- Mohamad NI, Cronin JB, Nosaka K. The effect of aerobic exercise during the interset rest periods on kinematics, kinetics, and lactate clearance of two resistance loading schemes. J Strength Cond Res. 2012;26(1):73–79. doi:10.1519/JSC.0b013e31821bf1f5.
- Berlanga LA, et al. The effects of active versus passive interset rest intervals in the bench-press exercise in resistance-trained men. Int J Sports Physiol Perform. 2025;20(7):934–940. doi:10.1123/ijspp.2024-0498.
- Feuerbacher J, et al. Neuromuscular adaptations to same versus separate muscle-group concurrent aerobic and strength training in recreationally active males and females. Scand J Med Sci Sports. 2025. doi:10.1111/sms.70025.
- Robineau J, et al. Specific training effects of concurrent aerobic and strength exercises depend on recovery duration. J Strength Cond Res. 2016. PubMed record.
Educational content. Adjust exercise to your capacity and discuss new training with a qualified professional if you have a medical condition.
About APP’s Editorial Approach
Published by Ageless Performance Project. Richard W. Hare, DC, NASM-CES, NASM-PES, CSCS is APP’s founder and developer. Read our editorial standards, evidence approach, and corrections process and affiliate disclosure. General education does not replace individualized care from a qualified healthcare professional.
