Jon Lipsey

Jon Lipsey is the founder of Unfiltered, a media platform covering health, fitness, technology and human performance. He is the former editor of Men's Fitness magazine and has spent more than 20 years reporting on the science and business of the health industry. He has interviewed leading figures across performance medicine, longevity science and sports business.

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NUTRITION Explainer

What is metabolic confusion?

In the restless world of dieting, metabolic confusion has become a hot topic. Unlike traditional approaches to eating that stick to consistent calorie restrictions, metabolic confusion introduces flexibility by alternating between high-calorie and low-calorie days. The theory? Keep your metabolism guessing, and you’ll avoid weight-loss plateaus. But does it really work and should you try…

January 14, 20260Comments

ByJon Lipsey

BUSINESS Explainer

What is connected fitness infrastructure and how does it work in modern gyms?

The fitness industry is undergoing a structural shift. For decades, gyms were built around isolated equipment—treadmills, bikes, weights—each operating independently, with little connection to user identity, data, or digital services. That model is being replaced by something closer to a technology platform. Connected fitness infrastructure refers to a system where physical fitness equipment is integrated…

January 14, 20260Comments

ByJon Lipsey

Uncategorized

What is Unfiltered?

Unfiltered is where you go to get advice and opinion from the world’s greatest coaches, academics and entrepreneurs that will help you Live Smarter. Living Smarter means using insights from people at the top of their game that will enhance every aspect of your life, whether that’s wellness, work or personal relationships. It’s about taking…

January 14, 20260Comments

ByJon Lipsey

MIND Upgrade

How to stay motivated to train when your energy or results drop off

For people who train regularly, gym motivation isn’t about getting started—it’s about keeping going. You’ve already built the habit. You’ve seen results. But somewhere between week 6 and month 6 or even year 6, the spark can fade. You plateau. Life gets busy. Your workouts start to feel more like maintenance than momentum. This is…

January 13, 20260Comments

ByJon Lipsey

BUSINESS Opinion

Joe DeFranco: Online PTs should have at least five years’ gym floor experience

Joe DeFranco Joe DeFranco is a world-renowned personal trainer and educator with more than 27 years of experience in the health, fitness and sports performance industry. His client list includes NFL players from all 32 teams, WWE Hall of Fame wrestlers, UFC fighters and SWAT team operators, and he’s the host of the chart-topping fitness…

January 11, 20260Comments

ByJon Lipsey

HEALTH Explainer

GHK-Cu: The Copper Peptide That May Boost Skin, Hair and Healing

Among the ever-growing list of peptides used in regenerative and aesthetic medicine, GHK-Cu stands out — not just because of its benefits, but because it’s already naturally present in the human body. This copper-binding peptide has been linked to improved skin health, hair regrowth, accelerated wound healing, and even anti-inflammatory and DNA-protective effects. So what…

January 3, 20260Comments

ByJon Lipsey

HEALTH Explainer

Thymosin Alpha-1: Can This Peptide Fight Inflammation, Infection and Fatigue?

Thymosin Alpha-1 isn’t new. It’s not being whispered about in underground forums or passed around in black-labelled bottles. In fact, this peptide has been used in clinical settings for more than three decades — particularly in countries like China — as a treatment for chronic viral infections and immune dysfunction. But in recent years, it’s…

January 3, 20260Comments

ByJon Lipsey

HEALTH Explainer

What is your metabolic age and how do you calculate it?

You're familiar with your chronological age, but there’s another measure that could be even more relevant when it comes to your health—your metabolic age. This lesser-known metric gives you an idea of how your body is aging on the inside, and it’s often a better indicator of overall health than the number of candles on…

December 13, 20250Comments

ByJon Lipsey

BUSINESS

The tech billionaires betting big on longevity

If you had billions in the bank, where would you invest? For some of the world’s wealthiest tech entrepreneurs, the answer is simple - developing life-extending technology so they can stick around a little longer to enjoy their riches. From reversing aging to regenerative medicine, these industry giants are pouring their fortunes into making a…

December 7, 20250Comments

ByJon Lipsey

NUTRITION

World’s first longevity bar claims to be “healthier than a healthy meal”

Can a 15g protein bar really be “healthier than a healthy meal”? That’s the claim made by Novos, which recently launched what it calls “the world’s first and only longevity bar.” It’s a bold promise — and not the only one. The claims Novos says its bar is: “The healthiest nutrition bar ever created” …

November 25, 20250Comments

ByJon Lipsey

Jon Lipsey

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