Pre-Workout Supplements Halve Sleep in Youth, Toronto Study Reveals

A University of Toronto study reveals teenagers and young adults using pre-workout supplements are over twice as likely to get five hours of sleep or less per night. These popular supplements, like Bang! and C4, often contain high levels of caffeine and other stimulants that can disrupt sleep patterns. Insufficient sleep during these developmental years can negatively impact mental health, physical growth, and academic performance. Researchers are urging healthcare professionals to discuss supplement use with young patients and recommend avoiding them 12-14 hours before bedtime.

Key Points: Pre-Workout Supplements Linked to Severe Sleep Loss in Youth

  • Users twice as likely to sleep ≤5 hours
  • Supplements contain 90-350mg caffeine per serving
  • Risk to mental health and development
  • Calls for stronger supplement oversight
  • Health pros urged to discuss use with patients
3 min read

Pre-workout supplements may cut sleep in half for young users, study finds

University of Toronto study finds young users of pre-workout supplements are twice as likely to sleep 5 hours or less, risking health.

"Young people often view pre-workout supplements as harmless fitness products... these findings underscore the importance of educating them. - Kyle T Ganson"

Toronto, March 10

A popular fitness trend among young people may be quietly undermining their sleep. A new study led by researchers at the University of Toronto has found that teenagers and young adults who use pre-workout supplements are significantly more likely to experience extremely short sleep durations.

According to Science Daily, the research, published on March 9, draws on data from the Canadian Study of Adolescent Behaviors and highlights a potential health risk linked to the growing popularity of energy-boosting fitness products.

According to the study, individuals aged 16 to 30 who reported using pre-workout supplements within the past year were more than twice as likely to sleep five hours or less per night compared with those who did not use such products. Health experts generally recommend around eight hours of sleep per night for people in this age group.

As per Science Daily, pre-workout supplements, including widely used products such as Bang!, Jack3D, and C4, are commonly marketed to improve exercise performance and increase energy levels. However, researchers say the stimulant-heavy formulas in many of these products could be interfering with sleep patterns.

"Pre-workout supplements, which often contain high levels of caffeine and stimulant-like ingredients, have become increasingly popular among teenagers and young adults seeking to improve exercise performance and boost energy," said lead author Kyle T Ganson, assistant professor at the Factor-Inwentash Faculty of Social Work at the University of Toronto.

"However, the study's findings point to potential risks to the well-being of young people who use these supplements," Ganson added.

One of the main concerns is the high caffeine content found in many pre-workout formulas. Researchers note that these products can contain anywhere from 90 milligrams to more than 350 milligrams of caffeine per serving.

By comparison, a typical can of cola contains about 35 milligrams of caffeine, while a standard cup of coffee has roughly 100 milligrams.

Health guidelines recommend that adolescents sleep between eight and ten hours per night, while young adults should aim for seven to nine hours. Insufficient sleep during these developmental years can affect mental health, physical growth, and academic performance.

The researchers say stimulant ingredients in pre-workout supplements may worsen existing sleep problems among young people who are already not getting enough rest.

To address the issue, the research team is urging health professionals, including pediatricians, family physicians, and social workers, to discuss supplement use with young patients. They also recommend practical steps such as avoiding pre-workout supplements 12 to 14 hours before bedtime.

The findings also add to calls for stronger oversight of dietary supplements in Canada.

"Young people often view pre-workout supplements as harmless fitness products," Ganson said, adding, "But these findings underscore the importance of educating them and their families about how these supplements can disrupt sleep and potentially affect overall health."

- ANI

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Reader Comments

P
Priya S
Not surprised at all. My brother in college takes these before his evening workout and then can't sleep until 2 AM. He's always tired for his morning lectures. We need better regulation in India too, these are sold so easily online.
D
David E
The study makes a valid point, but let's not demonize all supplements. Used responsibly and with proper timing—like not taking them after 4 PM—they can be fine. The problem is lack of education, not the product itself.
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Shreya B
In our culture, we've always valued natural energy from proper food and rest. Chyawanprash over chemical pre-workouts any day! 😊 Young people are sacrificing long-term health for short-term gains. Sleep is non-negotiable.
R
Rohit P
The pressure to look a certain way is huge on social media. Kids see influencers using these and think it's mandatory for a good physique. No one talks about the side effects. This study is an important wake-up call.
K
Kavya N
As a medical student, I see this often. Caffeine dependency is real. Many don't realize 350mg is like 3.5 cups of coffee at once! It's terrible for a developing brain. Good sleep is the best pre-workout, honestly.

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