HR Sensors and Sleep Earbuds

If you’ve been following the channel for a minute, you know I’ve got a thing for data and gear that actually survives real-world use. This week, I put some new tech through the ringer—specifically, I wanted to see if you really need to spend top dollar for heart rate accuracy and if "sleep earbuds" are actually a thing or just marketing fluff.

Here is a quick breakdown of what I’ve been testing lately.

The Heart Rate Showdown: Gold Standard vs. The Budget Chaos Goblin

We all know the Polar H10 is the gold standard. It’s what I usually compare everything against. But I wanted to see how two other contenders stacked up: the Coospo ECG strap (which costs about a third of the Polar) and the Amazfit Helio Strap (a bicep-worn optical sensor).

I didn’t just do a casual walk around the block. I took these through:

Peloton rides

Brutal 1km running intervals (the kind that make you question your life choices)

Weightlifting sessions

Elliptical warm-ups

The results for the Coospo were... well, let’s just say it earned the nickname "Budget Chaos Goblin" for a reason. And the Helio strap? It’s probably the most interesting piece of gear in the Amazfit lineup right now, especially if you’re tired of the chest strap "friction" but still want solid data for your cardio.

I’ve got the full data traces and error graphs in the video. If you want to see exactly where the optical sensor started to struggle compared to the ECG straps, or if that budget Coospo is actually "good enough" for your training, check out the full comparison video here.

Can You Actually Sleep in These? (Fitnexa Somnipods 3)

I also spent some time with the Fitnexa Somnipods 3. If you’ve ever tried to sleep with regular earbuds, you know the struggle—they’re bulky, they poke your brain when you roll over, and they usually die by 3:00 AM.

The Somnipods are built specifically for side-sleepers. They’re crazy thin (9.9mm), and for me, the comfort was the real story here. I tested them for:

Battery Life: Did they actually make it through the night?

ANC Performance: Can they handle a "chainsaw powered by hate" (a.k.a. a snoring spouse)?

The App: There's some "data goblin" stuff in there for sleep coaching and ambient sounds.

One thing to keep in mind: these aren't for a midnight Metallica concert. They’re built for a specific job. If you’ve been looking for a way to drown out the world without waking up with sore ears, these might be the answer. For the full breakdown on the call quality (rated by my wife) and the one "stupid phone" trick I had to use to get the volume right, watch the Somnipods 3 review here.

That’s the high-level view. I’m putting the finishing touches on some more tactical gear reviews soon, so stay tuned.