WHOOP and [solidcore] Announce New Integrated Partnership to Elevate Insights for Reformer-Based Workouts

WHOOP, the leader in human performance wearable technology, and [solidcore], the high-intensity, low-impact strength training workout with over 135 studios nationwide, have partnered to ensure more accurate tracking of [solidcore] workouts. As part of this collaboration, the WHOOP [solidcore] activity is used to better capture the unique intensity and strain of [solidcore] workouts, now available as a dedicated activity in the WHOOP app. This integration offers members an unprecedented level of personalized insights into their training and recovery.

Addressing a Longstanding Wearable Insights Challenge

One of the most common frustrations among [solidcore] members has been the difficulty of logging their workouts on wearables. The controlled, time-under-tension movements central to [solidcore] do not trigger the same heart rate spikes as traditional strength or cardio workouts—leading to underestimated effort and incomplete Strain scores.

WHOOP solves for this problem with its new [solidcore] activity, which quantifies muscular skeletal strain and supports the understanding of this type of non-cardiovascular-based training has on your body.

This partnership is a recognition that boutique fitness is continuing to gain ground, and [solidcore] is leading the charge. It has established itself as a premier strength training experience, earning a dedicated following that values precision, performance, and results. Now, with personalized insights from WHOOP, members can finally see the full impact of their efforts.

Unlike traditional weightlifting or cardio-based workouts, [solidcore] is targeted strength training on a custom-built reformer, designed for those who defy complacency. Using slow, controlled movements, members push their muscles to failure—building strength and endurance while minimizing strain on joints.

Until now, wearables have struggled to accurately measure this style of training. WHOOP fills this gap by integrating biomechanics-based tracking, ensuring that [solidcore] members get a precise reading of their muscular load, Strain, and recovery needs.

Coach-Tested, Performance-Proven

This refined data collection by WHOOP was tested and validated by [solidcore] coaches, who worked directly with WHOOP to fine-tune the technology. Their insights helped shape a more accurate approach to measuring resistance-based strength training, ensuring that WHOOP members get data that truly reflects their effort.

“One of the biggest benefits of WHOOP was the ability to ditch my traditional smartwatch, which often distracted me during class by lighting up with notifications. So much of [solidcore] is mental—focusing on your body, listening to it, and actively deciding to stay in the work because of the challenge. With WHOOP, I could fully lock in, confident that it would track and measure my effort without the need to start and stop an activity,” said Louisa Glynne, [solidcore] Senior Master Coach.

“Beyond that, WHOOP has transformed my understanding of strength training. It puts figures to the feelings, helping me dimensionalize just how challenging my workouts truly are. Seeing my Strain and Recovery data made me realize the true impact of [solidcore] on my body. It eliminates the guesswork in recovery, helping me decide whether to incorporate other forms of movement based on how hard I’ve already pushed myself. It’s by far the clearest picture of my overall fitness journey and my body’s response to training that I’ve ever had.”

Beyond enhanced workout insights, WHOOP is now part of [solidcore]’s Core Collective, providing members with exclusive perks and discounts to help them maximize their training and recovery. To learn more, visit solidcore.co/whoop/.

Press Kit: High-resolution imagery is available HERE.