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Understanding Glucagon Function In Blood Sugar Regulation
Over the last few years, much attention has been given to insulin…
When Was the Last Time You Replaced Your Nikes? How to Pick Your Next Pair
All products featured on Self are independently selected by our editors. However,…
The Best Polarized Sunglasses for All Your Outdoor Adventures
Picture this: You’re in the middle of a great morning workout, coasting…
Expert-Tested: Tonal Review (2025) – Breaking Muscle
We receive free products and receive commissions through our links. See disclosures…
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We Found the Only Prime Day Sneaker Deals Worth Shopping
Step up your game with discounted Adidas Sambas, New Balances, and more.Courtesy of the brands / Gabrielle LangdonAll products featured…
Kim Kardashian Breaks Down Her Weekly Workout Routine
No matter where you stand on the Kim Kardashian empire, you have to admit that SKIMS is a brand everyone’s…
Is the New Oura Ring Worth the Splurge? I Wore It for 10 Weeks to Find Out
Over the years, I’ve tested out more wearables than I can count. I’m a runner and avid weight lifter—and huge…
No, You Might Not Want to Do 100 Kettlebell Swings a Day—but Here’s How to Crush a Single Really Good One
Another month, another viral TikTok fitness challenge. The latest one? Doing 100 kettlebell swings a day for 30 days. Proponents…
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Best Elliptical Machines of 2025, Reviewed by Fitness Experts – Breaking Muscle
We receive free products and receive commissions through our links. See disclosures page.Elliptical machines have come a long way, with…
34 Core Exercises Top Trainers Swear By
Your core is way more than your abs–just like the best core exercises go beyond sit-ups, crunches, and planks.The thing…
These Marathon Running Shoes Will Carry You Across the Finish Line
By now, you’ve probably heard that marathons are the new quarter life crisis. And while running 26.2 miles with thousands…
Start Here: How to Use SELF’s Learn to Love Running Program
Running is one of the most popular ways to exercise—and among the most polarizing. For every person who happily sets…
Expert-Tested: Tonal Review (2025) – Breaking Muscle
We receive free products and receive commissions through our links. See disclosures page.Tonal is a high-tech smart gym that makes…
What Is HIIT—and How Can It Boost Your Workouts?
Demystifying that famous fitness acronym. Plus, how to use it in your own routine.Westend61/Adobe StockAll products featured on Self are…
Coming June 10: 25 Minute Speed Train by Joel Freeman
If you’re trying to work out but not seeing the results you want, or you’re short on time but still…
Feel Cold All the Time? Here Are 5 Possible Reasons Why
Do you find yourself asking, “Why am I always cold?” Or needing a blanket when dining al fresco in 70-degree…