Mathew Rosenburg

The AI Growth System For Fitness Creators

If you're a fitness creator in 2025, you're probably feeling it. The overwhelm. The burnout. The never-ending to-do list of posts, product ideas, DMs, emails, community messages, and launch planning. You're not alone. Since 2021, we’ve worked with thousands of creators – and the

Solin Showdown: Did $50k in cash prizes matter?

We started our first ever Solin Showdown in October, working with 28 of our top creator partners. For those of you that don’t know anything about the Solin Showdown - Solin sponsored $50,000 of cash prizes. Consumers could purchase any of the 28 participating challenges to be eligible

3-2-1 Method: Build A Superpower Community In 10 Mins / Week

Why Does Community Matter? Put yourself in your buyers’ shoes. Imagine joining a fitness challenge that is PDF only. No community. No participation from your ‘coach’ Nobody hyping you up. How long would you stick with it? If they offered another challenge 3 months from now, would you buy? Or

Solin Spotlight: Pernille’s Success Story

Overview This Solin Spotlight delves into the remarkable story of Pernille, one of our most exciting partners. Pernille has increased her total challenge participants more than 7x so far this year (and it’s only June!). The below Solin Spotlight highlights how Pernille has transformed hundreds of lives through her

Ignite Engagement: Dive into Solin's New Video Feature!🎥

Hey Creators! We're always looking for ways to help you strengthen your community connections and offer greater value to your members. That's why we're excited to introduce an incredible new feature to the Solin App: Videos in Your Community! What’s New? * Interactive Video

Unlock a World of Culinary Creativity with Solin's New Recipes Feature!

Hey Creators, We’re always looking for ways to help you connect more deeply with your community and offer even more value to your members. That’s why we’re thrilled to introduce an exciting new feature to your Solin Studio: Recipes for your Membership App. Exclusive Recipe Access Your

Your Most Requested Feature is Here: Weight Tracking!

Welcome back to the Solin blog! We hope you're loving the latest updates to Solin and we have been working tirelessly to bring you even more improvements. We're thrilled to announce a game-changing new feature for customers: tracking. Weight and Reps Tracking Users can now track

Solin - New Feature Updates

Get Up to Speed with Solin Studio Updates 🚀 Check out the newest features coming to the Solin Studio Hey Creators,  We hope you have been enjoying the latest updates to Solin and we have been hard at work to bring you more! Make sure you watch the video referenced above,

Exciting New Capabilities for Solin's Cookbook Strategy Team

This post is an update to our post from March 2023 announcing our Cookbook Strategy Team. You can find an abridged version of the previous post from March 2023 at the bottom of this page. In March 2023, we initially launched our cookbook strategy team to help creators launch cookbooks.

Fitness Challenge Post-Launch Strategy (Pt. 3 of 3)

Welcome back to part 3 of 3 in our educational series on Selling More Challenges as a Fitness Creator. If you missed either of our previous posts, you can go back and check out Part 1 of 5 on Pre-Launch Strategy or Part 2 of 5 on Launch Strategy. Okay,

Fitness Challenge Launch Strategy (Pt. 2 of 3)

Welcome back to our educational series for fitness creators. If you missed part 1 on pre-launch strategy, you can check it out here: Pt. 1 of 3 Today, it's all about your actual LAUNCH and how to kick things off with a bang. As always, I'll

Selling More Fitness Challenges as a Creator (Pt. 1 of 3)

Welcome to our educational series for creators who want to maximize sales of their fitness challenges. This series is all about sharing little-known tips, tactics, & frameworks to help fitness creators sell more challenges and help more people. For all the posts in this series, I am going to start

5 Simple Tweaks To Get Your Body Ready For Beach Season

This is the first in our series of posts with simpler, more actionable content to help you reach your health goals. So, without further ado, let’s dive in and go through the 5 simple tweaks you can make today to get your body ready for beach season. 1. Eat

Solin Cookbook Strategy Team

Solin is expanding its cookbook strategy team to help more creators design, publish, & distribute their own cookbooks & detailed nutrition guides One of the main ways fitness creators have added value and made money is through fitness programs & online coaching. If you scan the fitness industry, nearly every

8 Proven Tactics to Sell More Products as a Creator

It’s the age-old question we get 10x / day. From casual conversations with creator friends at Gold’s Gym in Venice, to first conversations with potential partners, to weekly or monthly strategy calls we do with our longstanding partners. “My challenge / guide / program / cookbook / [other product] is the best thing

Cookbooks

Recommended: Cookbooks & Nutrition Guides for The New Year

With the holiday season upon us & the New Year fast approaching, questions are rolling in about the most popular cookbooks on Solin. Check out a sneak peek below into some of our favorite cookbooks & nutrition guides to treat yourself or buy as gifts for the New Year. And

Is Creatine the 'Michael Jordan of Supplements?' Here’s What the Science Says

In this article, we seek to provide a simple overview of creatine and links to valuable resources & discussions around creatine for those who want to dive deeper. What is creatine? Creatine is a compound that is naturally produced in the human body, primarily in the liver, pancreas, and kidneys.

Exclusive: Interview & Fitness Program With The Rock’s Trainer, Mike Ryan

We chat about all things Mike’s career, from running Gold’s in the 1990s, to meeting Kobe Bryant & Michael Jordan, to training The Rock, to launching the Ultimate Fitness Program – as written by Solin founder, Mathew Rosenburg When I joined Gold’s Gym in Venice as a member,

For Creators: The New Year's Fitness Challenge Playbook

*Containing everything we’ve learned from 100+ fitness challenge launches There are so many different ways for creators to monetize their content— programs, subscriptions, apps, e-books, guides — but one type of offering seems to captivate & inspire an audience unlike any other: challenges. If you follow a lot of fitness

Level Up Your Life

There are so many factors that go into living a happy, healthy, & high-quality life. At Solin, it’s our job to help you unlock that life you’ve always dreamed of living. Dan Buettner – a National Geographic Fellow, journalist, and New York Times bestseller created the concept of the

Everything You Need to Know About the Explore Algorithm

We recently announced Solin Explore, which you can find by navigating here: https://solin.stream/explore One topic that is always top of mind for creators (and often consumers) is how to rank higher in any given algorithm. This has certainly been a theme on Instagram, Tik Tok, YouTube, and

News

Introducing Solin Explore

Today, we’re excited to announce Solin Explore: https://solin.stream/explore Solin Explore is a place where you can discover and explore the top digital products from creators on the Solin platform. You can sort by several main categories: All, Programs, Challenges, Memberships, & Cookbooks. Within each category, you

Cookbooks

5 Foundational Nutrition Resources for Creators & Consumers

One thing we really nerd out on over here at team Solin is going deep in research on any topics we’re working on with our creator partners. As a digital products partner & platform, it’s our job to add value to all the creators we partner with and

Cookbooks

Cookbook Strategy Team

Solin is now working with more creators to help them create, design, publish, & distribute their cookbooks & detailed nutrition guides One of the main ways fitness creators have added value and made money over time is through fitness programs & online coaching. If you scan the fitness industry, nearly

News

The Solin Story

— as told by Founder, Mathew Rosenburg My brother, Michael, and I founded Solin back in 2019 — partially out of The Wharton School at the University of Pennsylvania, and partially out of a shared incubator house with the rest of our team in Santa Monica, CA. We had 2 gyms — one