
PEAK40
Midlife is hectic, stressful and demanding. Weight gain, fatigue, joint pain and the like creep up on you in midlife, and before you know it, you’re struggling everyday to feel your best and battling just to live pain free.
The challenge is that lack of sleep, high stress, and general lack of time leaves you stuck in neutral (or what feels like reverse!). But, it doesn’t have to be this way.
Midlife is also the time in your life with the greatest opportunity for growth. PEAK40 is all about living your best life in midlife. It’s about conquering your performance goals and health challenges in your mid-30s, 40s, 50s and beyond rather than settling.
Small changes, done consistently over time, yield incredible results. PEAK40 is your roadmap on the journey to better health, a better body, and your best performance in mid-life.
PEAK40 is about making midlife, your best life!
Latest episodes

Sep 22, 2023 • 50min
S3E1: Finding Your Flow & The New Science of Peak Performance Ageing w Steven Kotler
In Season 3, Episode 1, Dr. Marc Bubbs interviews Steven Kotler, a New York Times-bestselling author, an award-winning journalist and the founder and executive director of the Flow Research Collective.
Steven is one of the world’s leading experts on peak performance ageing and he explores this in his new book Gnar Country, Growing Old and Staying Rad.
LINKS TO STEVEN WORK:
Website: https://www.stevenkotler.com/
Twitter (X): https://twitter.com/steven_kotler
FOLLOW DR BUBBS:
Instagram: https://www.instagram.com/drbubbs/
Twitter: twitter.com/DrBubbs
Website: DrBubbs.com
BOOKS:
PEAK40: The New Science of Midlife Health for a Leaner, Stronger Body and Sharper Mind

Dec 22, 2022 • 45min
S2E8: 9 Tips for Better Immunity & The Science of Staying Well w Dr. Jenna Macciochi, PhD
Dr. Jenna Macciochi, Immunologist at Sussex University & Author of Immunity: The Science of Staying Well, discusses the interaction between nutrition, lifestyle, and the immune system. Topics covered include the components of the immune system, the role of gut bacteria, the impact of the environment on the immune system, and the connection between self-compassion and immune health.

Dec 9, 2022 • 47min
S2E7: The Great Age Reboot: 8 Tips for Cracking the Longevity Code w Dr. Michael Roizen, MD
In Season 2, Episode #7, Dr. Marc Bubbs interviews renonwed director of the Cleveland Clinic and 5x NY Times best-selling author Dr. Michael Roizen, MD to discuss his new book The Great Age Reboot: Cracking the Longevity Code for a Younger Tomorrow
ABOUT DR. ROISEN:
Website: Cleveland Clinic
Twitter: Dr. Roizen
Question About Longevity?
Share in comments below.

Nov 11, 2022 • 27min
S2E6: 5 Key Blood Tests to Assess Your Metabolic Health w Dr. Maurer
In Season 2, Episode #6, Marc Bubbs interviews Dr. Richard Maurer, ND, to discuss key lab tests for assessing your metabolic health as you age.
ABOUT DR.MAURER:
Twitter: https://twitter.com/DrRichardMaurer
PEAK40 Nutrition Coaching:
Join our PRE-SALE list to be the first to hear about the spring/fall PEAK40 coaching groups:
Pre-Sale list for Women
Pre-Sale list for Men

Apr 29, 2022 • 34min
S2E5: Navigating Menopause, Midlife Hormone Shifts & Finding Happiness w Liz Earle
Liz Earle, a British writer and entrepreneur, discusses menopause and her best-selling book. They cover misconceptions about menopause, prioritizing tasks, and supporting bone and muscle health. The benefits of exercise and being in nature are highlighted. They also talk about the impact of estrogen and the benefits of hormone replacement therapy. Helpful resources for navigating perimenopause and menopause are shared.

Feb 8, 2022 • 38min
S2E4: Kids, Play & How Recess Quality Impacts Behaviour & Cognition w Dr. William Massey, PhD
In Season 2, Episode #4 of the PEAK40 podcast, Marc Bubbs interviews psychologist Dr. William Massey, PhD, assistant professor at the College of Public Health and Human Sciences at Oregon State University to discuss kids play, recess at school and its benefit on mental, social, and behavioural health.
ABOUT DR. MASSEY:
Oregon State University: https://health.oregonstate.edu/people/william-massey
Twitter: https://twitter.com/wvmassey
EPISODE SPONSOR: JAMIESON VITAMINS
Save 10% OFF your order using the promo code BUBBS at checkout.
www.jamiesonvitamins.com
PEAK40 Nutrition Coaching:
Join our PRE-SALE list to be the first to hear about the spring/fall PEAK40 coaching groups:
Pre-Sale list for Women
Pre-Sale list for Men

Jan 14, 2022 • 28min
S2E3: Why We Eat (Too Much) - The New Science of Appetite w Dr. Andrew Jenkison, MD
In Season 2, Episode #3 of the PEAK40 podcast, Marc Bubbs interviews bariatric surgeon Dr. Andrew Jenkinson, MD to discuss the role of appetite and weight gain in hi new book Why We Eat (Too Much) - The New Science of Appetite,
SUMMARY Of EPISODE:
4:35 – Obesity resistant, vulnerable or sensitive?
8:35 – What two factors impact our bodyweight ‘set point’?
10:55 – Satiety hormones impacted by bariatric surgery
12:30 – The key role of protein in satiety and health
20:00 – Natural saturated fat intake vs. processed food
25:08 – Sedentary living and risk of type-2 diabetes
26:20 – Dr. Jenkinson’s tips for better health in 2022
ABOUT DR. JENKINSON:
Website: https://www.whyweeattoomuch.co.uk/
Twitter: https://twitter.com/mradjenkinson1
Question About Appetite?
Share in comments below.
>> New PEAK40 Nutrition Coaching group in 2022!
We’re onboarding our next coaching group from January 10th to 31st.
Learn more at DrBubbs.com/PEAK40
>> Save $50 OFF with code LEVELUP22
You can also join our PRE-SALE list to be the first to hear about the spring/fall groups in 2022:
Pre-Sale list for Women
Pre-Sale list for Men

Dec 21, 2021 • 29min
S2E2: Covid19 & Building Better Immunity with Nutrition, Movement and Lifestyle Changes w Dr. Gleeson, PhD
In Season 2, Episode #2 of the PEAK40 podcast, Marc Bubbs interviews emeritus professor Dr. Michael Gleeson, PhD of Loughborough University to discuss his work in exercise immunology, how to support a robust immune system, and the role of muscle and body-fat in immunity.
SUMMARY OF EPISODE:
3:00 – Professor Michael Gleeson research background
7:40 – Covid19, immune tolerance and how to help protect yourself?
10:25 – How to support a robust immune system
11:15 – Probiotics, gut health and immunity
12:20 – Anti-inflammatory effect of exercise
16:13 – Does HIIT training really improve weight loss?
19:40 – Time-efficient benefits of HIIT for improving health
21:30 – Why understanding nutrition ‘principles’ is key for long-term weight loss
28:20 – Late-eating, alcohol intake and immune function
ABOUT PROFESSOR GLEESON:
Website: https://sites.google.com/view/prof4health/home
Twitter: https://twitter.com/profmikegleeson
DR. BUBBS BOOKS:
PEAK40 - The New Science of Midlife Health for a Leaner, Stronger Body and Sharper Mind
PEAK: The New Science of Athletic Performance That Is Revolutionizing Sport (#1 BEST SELLER)
Subscribe to 'PEAK40 WEEKLY' - Simple, actionable insights!

Dec 2, 2021 • 39min
S2E1: 5 Key Biomarkers for Metabolic Health (& Reducing Heart Attack Risk) w Dr. Ovadia, MD
In Season 2, Episode #1 of the PEAK40 podcast, Marc Bubbs interviews heart surgeon and author Dr. Philip Ovadia, MD, to discuss the connection between better metabolic health and heart disease risk.
Dr. Ovadia outlines 5 key biomarkers you can track to assess your metabolic health and how nutrition, exercise and lifestyle factors can improve your metabolic and heart health.
SUMMARY OF EPISODE:
2:30 – Dr. Ovadia background and why prevention is the best medicine
6:25 – The connection between metabolic health and heart disease risk
8:24 – 95% chance of not being metabolically healthy if you’re overweight
10:05 – The modern food environment and impacts on metabolic health
12:25 – How LDL cholesterol versus metabolic syndrome stack up as and heart disease risk
17:00 – 5 key biomarkers for assessing your metabolic health
22:20 – Healthcare system challenges: too many sick people, not enough doctors
24:56 – Principles vs. strategies: why ‘understanding’ is key
28:45 – Exercise, strength and how it supports better metabolic health
33:40 – Dr. Ovadia story about struggling with lifelong weight loss challenges.
ABOUT DR. OVADIA
Website: ovadiahearthealth.com
Book: Stay Off My Operating Table
Twitter: ifixhearts
Subscribe 'PEAK40 WEEKLY' - Simple, actionable insights!

Jul 15, 2021 • 27min
S1E10: Blood Tests, Biomarkers & What’s Most Likely to Kill You in Midlife
In episode 10, Dr. Marc Bubbs discusses how a few simple tests at your annual physical can provide you with great insights on your current health status and disease risk (without having to spend extra hundreds of dollars on testing).
Marc shares clips from best-selling author Dr. Cate Shanahan, MD, along with insights from Associate Professor at National University Of Health Sciences Dr. Fraser Smith, ND, and expert in biomarkers for longevity. Dr. Richard Maurer, ND.
>> Looking for a deeper dive? My new book PEAK40 is available now.
>> Looking for support? Check out PEAK40 Nutrition Coaching for Men and Women.