Updated September 2026
Short answer: If your aim is exercise performance, pre-workout light has more published research behind it than a claim that you must use it after training. If your aim is recovery, post-workout use is reasonable to explore, but there is no established best timing or guaranteed benefit for a home panel. Many positive exercise studies used localized photobiomodulation on specific muscles, not full-body consumer panels. Use the instructions for your exact device rather than copying a research protocol (pre-exercise meta-analysis; whole-body systematic review).
Key takeaways
- Before exercise: A meta-analysis of randomized trials reported some improvements in muscle endurance and selected recovery measures after pre-exercise photobiomodulation, but results varied by activity group and study design (Li et al.).
- After exercise: Studies have investigated post-exercise use, but that does not establish a single optimal recovery window or a guaranteed reduction in soreness (Ferraresi et al.; D'Amico et al.).
- Both: One controlled treadmill-training trial found favorable outcomes with before-and-after treatment, but a particular trial does not show that everyone should double their home-panel sessions (treadmill trial).
- Device translation matters: A 2025 systematic review of five human whole-body PBM studies found no demonstrated exercise-performance or recovery benefit in those studies, despite positive findings in parts of the localized-device literature (whole-body review).
What does the pre-workout research show?
In a 2024 meta-analysis of 34 randomized trials, pre-exercise photobiomodulation was associated with improved muscle endurance and some recovery-related measures overall. The authors also reported differences between activity-level subgroups: the physically active subgroup did not show the same significant benefit as the inactive and athlete subgroups on the reported analyses. That is a reason to describe the result as promising but variable, not a universal performance boost (Li et al.).
A review of human muscle studies includes trials using light on individual muscle groups before exercise. The wavelength, applicator, contact versus non-contact setup, treated muscle, dose and exercise test varied substantially. Results from an applicator placed at several points over one muscle cannot be assumed to reproduce with a standing panel at an unspecified distance (Ferraresi et al.).
What about using it after a workout?
Post-exercise use has also been studied, particularly for soreness and recovery after demanding exercise. The findings are mixed by outcome. In one randomized study of recovery from exercise-induced muscle damage, calf soreness improved relative to control, while vertical jump, agility and several other soreness measures did not show significant differences. This does not mean “post-workout never works”; it means specific outcomes should not be marketed as certain (D'Amico et al.).
An older clinical recommendations paper suggested timing windows for particular localized research protocols, but those windows should not be treated as a universal household rule. The practical home question is whether your device's instructions support your chosen distance, session length and frequency (Leal-Junior et al.). For those variables, see Hooga's dosage guide and distance guide.
Is using it both before and after better?
A placebo-controlled treadmill-training trial reported improvements in time to exhaustion and oxygen uptake when photobiomodulation was applied before and after training over 12 weeks. That is an interesting protocol-specific result, not proof that two sessions beat one for every exercise type, and not a license to ignore total exposure (treadmill trial).
Do not assume that twice the sessions means twice the benefit. PBM can show non-linear dose responses in experimental work, and irradiance and time affect the surface exposure delivered (Zein et al.). If your model's instructions allow more than one session, keep a consistent log and avoid stacking unmeasured exposure just because a study used a different device.
Do full-body panels have the same evidence as localized devices?
Not yet. A systematic review published in 2025 included five whole-body human studies totaling 105 physically active participants. It reported no evidence of benefit for exercise performance or recovery in that limited set, while noting that more research is needed to understand the contrast with localized photobiomodulation research. That is the relevant counterweight to confident claims that a full-body panel is a proven athletic-performance device (whole-body review).
This does not make a panel useless for all personal wellness goals. It means we should distinguish a convenient consumer setup from the much narrower interventions and outcomes tested in published studies.
A practical routine without false precision
| Your reason for trying it | Sensible starting approach | What not to infer |
|---|---|---|
| Explore pre-training use | Choose the muscle area you intend to expose; follow your panel's specified distance and session instructions before training | That a home panel reproduces a localized clinical trial |
| Explore post-training use | Use the same documented setup on a consistent schedule; note soreness and readiness over several comparable workouts | That a session can replace sleep, food, or appropriate training progression |
| Compare timing for yourself | Keep device mode, distance, minutes and exercise type as similar as practical; change only the timing and record the outcome | That a self-test establishes a clinical effect |
These are organizational suggestions, not prescribed doses. There is no honest universal “10–15 minutes before and 15–20 after” recommendation across devices. If you are recovering from an injury, managing a medical condition, or taking a photosensitizing medicine, seek appropriate professional advice rather than using a workout article as treatment guidance.
For the broader science on soreness versus performance, read red light therapy for muscle recovery. For setup selection, the Hooga panel buying guide and red light therapy panel collection show current formats. Hooga sells the products discussed here; the research summarized above is not product-specific validation.
Frequently asked questions
Can red light replace a warm-up?
No. The trials discussed here do not establish that photobiomodulation replaces progressive movement, sport-specific preparation or load management.
Do I need to use it every training day?
There is no universal research-backed frequency for all home panels. Start with your model's manual and the dosage and frequency guide.
Will a large panel improve my strength or speed?
That is not established for consumer full-body panels. The whole-body exercise evidence remains limited and did not demonstrate recovery or performance benefits in the 2025 systematic review (whole-body review).
References and editorial disclosure
- Li BM et al. Can pre-exercise photobiomodulation improve muscle endurance and promote recovery? Lasers in Medical Science. 2024. Meta-analysis of randomized trials.
- A systematic review on whole-body photobiomodulation for exercise performance and recovery. 2025.
- Ferraresi C et al. Photobiomodulation in human muscle tissue. 2016.
- Leal-Junior ECP et al. Clinical and scientific recommendations for photobiomodulation in exercise. 2018.
- Treadmill endurance-training timing trial. Randomized, triple-blinded, placebo-controlled trial.
- D'Amico A et al. The Influence of Phototherapy on Recovery From Exercise-Induced Muscle Damage. 2022.
Written by: Hooga Editorial Team. Hooga has designed and sold photobiomodulation devices since 2019. Educational content is based on published research, device specifications and product experience. This is not medical advice or an independent third-party device review. Last updated: September 2026.