Daily Research

Metabolism Series: Benefits of Stretching

by Reframe Research Team • 4 min read
Research shows that stretching goes beyond building flexibility — it supports your metabolism and overall health. Regular stretching can reduce blood glucose levels, improve insulin sensitivity, and lower cortisol, which makes it especially beneficial during lifestyle shifts like cutting back on alcohol. Consistent stretching also enhances vascular function and reduces cravings by improving stress management. With just a few sessions - a week that target major muscle groups, stretching can help stabilize your energy levels and keep you feeling balanced and resilient.

Imagine this: you've been working on reducing your alcohol intake, but you still feel like something's off. Maybe your energy dips unexpectedly, or your cravings hit harder on some days than others. These challenges might be tied to metabolic disturbances, such as fluctuating blood glucose levels, which are common during lifestyle changes like cutting back on alcohol. Could stretching be a simple yet powerful tool to help?

Stretching isn’t just for gym enthusiasts or yoga lovers — it’s a science-backed way to increase your body’s natural balance and resilience. Let’s take a look at how stretching can stabilize your internal systems while enhancing your overall health.

The Science of Stretching

Being able to touch your toes is great, but stretching does a lot more than that. On a physiological level, it creates a ripple effect of health benefits that impact various systems in the body. Research shows that stretching increases blood flow to muscles, delivers essential nutrients and oxygen, and flushes out metabolic waste products. Consistent stretching also helps maintain muscle mass and joint health while reducing inflammation in connective tissue.[1]

However, the benefits extend beyond the musculoskeletal system. Recent studies show that stretching has cardiovascular benefits: it makes our arteries more efficient and less stiff, protecting us from cardiovascular diseases.[2] It also triggers the release of endorphins and lowers the levels of the stress hormone cortisol — two powerful ways to curb cravings and stress.

And there’s more: a recent study also shows that stretching influences blood glucose regulation and helps stabilize our energy levels. Let’s take a closer look.

Not a “Far Stretch”: How Flexibility Improves Metabolism

A 2024 study in Sports Medicine-Open took a closer look at the impact of stretching on blood glucose levels.[3] The review analyzed 13 studies involving 731 participants, with most studies focusing on diabetic patients or those at risk of type 2 diabetes.

The researchers found that stretching interventions led to a meaningful reduction in blood glucose levels, with an average decrease of 17% after sessions. For long-term blood glucose control, consistent stretching over weeks or months reduced levels by an average of 7.2%. 

Stretching protocols typically involved 3–4 sessions per week, with each session including exercises sustained for about 30 seconds. The types of stretching included static, passive, and proprioceptive neuromuscular facilitation (a stretching technique that improves muscle elasticity), all of which showed beneficial outcomes.

So, how does stretching achieve these effects? The physiological mechanisms behind the benefits likely involve improvements in vascular function and glucose transport:

  • Enhanced blood flow. Stretching increases blood flow and stimulates the release of nitric oxide, a molecule that facilitates glucose uptake in muscle cells.
  • Improved insulin sensitivity. Stretching also mimics the benefits of more intense exercise by activating glucose transport mechanisms (such as GLUT-4 transporters), which help move glucose out of the bloodstream and into cells for energy. 
  • Stress reduction. Stretching reduces cortisol, a stress hormone that elevates blood glucose levels.

While the results are promising, it’s worth noting that the studies focused on subjects with type 2 diabetes. Still, anyone looking for an accessible, low-impact way to support metabolic health can benefit from regular stretching.

Stretching enhances muscle flexibility and improves blood flow, supporting longevity and reducing stress.

Practical Tips for Implementing Effective Stretching Routines

To maximize the benefits of stretching, consider the following strategies.

1. Get a Routine Going

Aim for three to four stretching sessions per week. Consistency is key to seeing benefits — start slowly and stick with it.

2. Focus on Major Muscle Groups

Target areas such as your hamstrings, calves, hips, shoulders, and back.

  • Hamstrings: Try a seated forward fold or a standing hamstring stretch by placing one leg on a chair or surface and reaching for your toes.
  • Calves: Do a calf stretch by pressing your hands against a wall with one leg extended behind you, keeping the heel on the ground.
  • Hips: Perform a butterfly stretch by sitting on the floor with the soles of your feet together, gently pressing your knees toward the ground.
  • Shoulders: Cross one arm across your chest and use your opposite hand to gently pull it closer to your body.
  • Back: Incorporate a cat-cow stretch on all fours, alternating between arching and rounding your back.

Maintain each stretch for about 30 seconds to give your muscles and connective tissues time to lengthen and stimulate blood flow.

3. Mix in Different Types of Stretching

Experiment with static stretching (holding a position), passive stretching (using external support to deepen the stretch), and proprioceptive neuromuscular facilitation (which involves contracting and relaxing muscles to improve elasticity).

4. Incorporate Stretching Into Your Day

Stretch after your workout, during work breaks, or as part of your evening routine. Pair it with deep breathing to lower stress and enhance its metabolic benefits.

5. Make It Enjoyable

Use calming music or practice mindfulness during stretching to enhance the stress-reduction benefits, stabilize blood glucose levels, and reduce cravings.

Summing Up

As we now know, stretching is more than a prelude to the “main” workout — it’s a transformative tool for your body and mind. With each stretch, you’re enhancing blood flow, improving your body’s ability to process glucose, and calming your mind — all in a matter of minutes. And as the science develops, so does our understanding of how something very approachable can create such a big impact. So, take a few minutes each day to stretch. It's an investment in your health, resilience, and well-being that pays off in many fundamental ways.

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[1] Berrueta, Lisbeth, Igla Muskaj, Sara Olenich, Taylor Butler, Gary J Badger, Romain A Colas, Matthew Spite, Charles N Serhan, and Helene M Langevin. “Stretching impacts inflammation resolution in connective tissue.” (2015) J Cell Physiol, 231(7).

https://pmc.ncbi.nlm.nih.gov/articles/PMC5222602/

[2] Bisconti, AV et al. “Evidence for improved systemic and local vascular function after long-term passive static stretching training of the musculoskeletal system.” (2020) J Physiol. https://www.ncbi.nlm.nih.gov/search/research-news/10830/

[3] Thomas, Ewan Thomas, Salvatore Ficarra 1, Masatoshi Nakamura 2, Patrik Drid 3, Tatjana Trivic, and Antonino Bianco. “The Effects of Stretching Exercise on Levels of Blood Glucose: A Systematic Review with Meta-Analysis.” (2024) Sports Med Open, 10. https://pmc.ncbi.nlm.nih.gov/articles/PMC10858005/

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