The Best Summer Arm Workout on Peloton: How Tunde Oyeneyin’s 2 Programs Gets You Tank Top Ready

The Peloton Instructor Heading to the Pages of Sports Illustrated Swimsuit Has Two Programs Built to Define and Strengthen Your Arms Before Summer

The best summer arm workout does not have to mean hours in the gym with complicated programming. For Peloton members who want defined arms and stronger shoulders before the tank tops and swimsuits come out, Tunde Oyeneyin has built two structured four-week programs that deliver real results without requiring a gym membership or a personal trainer. The fact that Tunde herself won the 2025 Sports Illustrated Swimsuit Swim Search, earning her a spot in the 2026 SI Swimsuit Issue, tells you something about the credibility she brings to upper body training.

Why a Structured Program Beats Random Classes

Scrolling through the Peloton class library and picking an arm class here and there is better than nothing. But a structured program is better than that. When classes are sequenced intentionally, each session builds on the last. Muscles are challenged progressively, recovery is built into the schedule, and the member develops consistency rather than just occasional effort. Consistency, more than any single workout, is what produces visible change.

Peloton’s structured programs also give members something that a random class stack cannot: a built-in reason to show up. Each program comes with a schedule to follow and badges to earn as you complete milestones along the way. That combination of commitment and reward is not accidental. Checking off a completed week and earning a badge creates a psychological feedback loop that reinforces the habit and makes it easier to lace up for the next session. The program does not just tell you what to do. It gives you a reason to keep going.

For anyone serious about having arms they feel confident in this summer, a structured summer arm workout program is the most direct path to visible results. Tunde’s two programs provide exactly that structure, and they are accessible to members at every fitness level.

Meet Your Instructor: Tunde Oyeneyin

Tunde Oyeneyin joined Peloton in 2019 and quickly became one of the platform’s most recognized instructors. She leads cycling and strength classes and her upper body programming built a loyal community following long before Peloton formalized it into a structured program. According to her Sports Illustrated Swimsuit profile, her Arms with Tunde program performs in the top 3% of all programs offered on the platform.

Beyond Peloton, Oyeneyin is a New York Times bestselling author and the winner of Sports Illustrated Swimsuit’s 2025 Swim Search, earning her a spot as a rookie in the 2026 SI Swimsuit Issue. She has spoken openly about not always feeling comfortable in her own body and credits the process of building fitness with transforming her confidence. That perspective informs how she coaches. These programs are not built around aesthetics alone. They are built around the process of getting stronger, and the definition follows.

The Two Programs: Which Summer Arm Workout Is Right for You

Tunde has two dedicated upper body programs on Peloton, and they are not interchangeable. Understanding the difference helps members choose the right starting point and build a progression plan that produces results.

Arms with Tunde (2022): The Foundation

Arms with Tunde is a four-week program designed to strengthen the arms and shoulders, with 19 classes spread across the four weeks on a three-day-per-week schedule. Class lengths build progressively, starting at 10 minutes in Week 1 and increasing to 20 minutes by Week 4.

This program was originally designed to pair with the Peloton Guide’s Movement Tracker but is fully available to all members. (If you are curious about what happened to the Guide, The Clip Out has the full story.)

The community is consistent in its feedback: Arms with Tunde skews toward muscle endurance rather than hypertrophy, meaning it builds tone and definition rather than mass. The program’s reach speaks for itself. It grew popular enough that Peloton expanded it to German-speaking members, a testament to how broadly it resonated. The Clip Out covered that expansion when it was announced.

For a summer arm workout goal focused on leaner, more defined arms, that is precisely the right training stimulus. Several members described it as the bridge that gave them the confidence and foundation to advance to heavier lifting. One member completed the program five times and credited it with building arm definition she had not previously achieved.

Equipment recommended: medium weights, generally 8 to 15 pounds depending on current fitness level.

Upper Body with Tunde (2025): The Full Program

Upper Body with Tunde is the more complete of the two programs. Where Arms with Tunde focuses specifically on arms and shoulders, this four-week program expands the scope to building strength across the arms, shoulders, chest, back, and core.

The program runs three sessions per week, with each session targeting a different area. Session 1 focuses on push muscles, including the chest, triceps, and shoulders. Session 2 targets pull muscles, covering the back, biceps, and traps. Session 3 combines upper body strength with core conditioning.

The structure is designed for members who are ready to work across the full upper body with intention. The push, pull, and core split is a proven programming approach that balances muscle development and prevents overworking any single group. The program is flexible, allowing members to adjust intensity by modifying weights, reps, or pace to match their fitness level, and Tunde’s emphasis on proper form makes it accessible to a wide range of members.

For a full breakdown of what to expect, The Clip Out’s review of Upper Body with Tunde covers it in detail.

For anyone whose summer arm workout goal includes stronger shoulders and a more defined back as well as arms, this is the program to reach for.

How to Use Both Programs as a Summer Plan

The most effective approach is to treat the two programs as a progression rather than a choice.

If you are starting from scratch or rebuilding a foundation, begin with Arms with Tunde. Complete the four weeks, note where you feel strong and where you want more challenge, then move directly into Upper Body with Tunde. Back to back, the two programs give you eight weeks of structured upper body training, which is enough time to see and feel a meaningful difference before summer.

If you are already comfortable with upper body training, start with Upper Body with Tunde. Its broader scope and slightly longer sessions will challenge members who have already built a base, and the four weeks will produce visible results when paired with honest weight selection.

Both programs are available in the Programs section of the Peloton app and can be accessed on the Bike, Tread, or the digital app.

The Most Important Variable: Your Weights

The single most common piece of advice from members who saw results is straightforward: do not undersell yourself on weight selection. Both programs provide the structure and the coaching. The member provides the effort. Selecting weights that feel genuinely difficult in the final two to three reps of each set is what separates a summer arm workout that produces results from one that simply fills time.

Start with weights that challenge you without compromising form, and increase as the program progresses. Tunde will tell you when to push. Listen.

What to Expect

Results from either program are realistic when the work is consistent and the weights are honest. Members report visible arm and shoulder definition within the four-week window, with the most significant changes noted by those who complete both programs sequentially.

Neither program is designed for mass building. Both are designed for the kind of lean, defined upper body that looks and feels strong in a tank top or swimsuit. For members with a specific summer timeline, starting the first program now puts eight weeks of structured training between today and summer, which is exactly the right amount of time to see meaningful change.

The programming is in place. Tunde brings the energy and the expertise. The summer arm workout that actually works is already in your app, waiting to be started.

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