Upgraded Whoop MG not good

General
1

I’ve recently upgraded from the WHOOP 4.0 to the Whoop MG and I’m seeing significantly lower daily calorie expenditure than before, which I believe is inaccurate and misleading. I understand this version is meant to be more accurate and tends to underestimate but that is far from an underestimate it’s grossly lower.

My details

Height/weight: 5’10" (178 cm), 71 kg

Basal Metabolic Rate: ~1,700 kcal/day (independent estimate)

Typical day: on my feet from ~06:00, plus a gym session and an interval training workout

Issue

On multiple active days, the Whoop MG is reporting total daily calories under 2,000 kcal (often ~1,800 kcal).

This is implausible given my BMR alone is ~1,700 kcal, before adding activity, EPOC, NEAT, and structured training.

With the WHOOP 4.0, my totals were consistently higher and more believable for the same activity pattern. Also was similar when compared to othe devices inclduing Polar chest strap for heart rate.

Examples (recent days)

06:00–22:30 on my feet, 60-min resistance session, 4×4 intervals on treadmill → ~1,850 kcal reported.

Full clinical day (Dr ), lots of walking/standing, evening workout → ~1,900 kcal reported.

Troubleshooting done

Correct fit on wrist and biceps band

Rebooted device and phone, reinstalled app, reset Bluetooth

Ensured latest firmware/app versions

Charged to 100%, cleaned sensors, swapped wearing arm/placement

Request

1. Please review my recent data and advise if there’s a known calorie model or firmware issue on Whoop MG.

2. I ordered a replacement which has had no effect!

3. If there’s a calibration step I’ve missed, please share clear instructions.

Happy to provide order number, device ID, logs, and any time stamps you need. I rely on WHOOP to guide training and recovery decisions, so accurate energy expenditure matters.

Thanks in advance for your help—please let me know next steps.

1 Like
2

Hey @Paragnandha25,

There isn’t a known issue with the calorie expenditure model or firmware on WHOOP MG that would cause noticeably lower calorie readings compared to WHOOP 4.0. WHOOP MG was designed with upgraded sensors and a refined fit to make tracking even more accurate.

To get the best calorie accuracy on WHOOP MG:

  • Wear it snugly, about one finger-width above your wrist bone, with no green LEDs showing.

  • Use an ECG-compatible band if you’d like to access heart screener features.

  • Keep your WHOOP app and firmware up to date.

  • Remember, WHOOP bases calorie burn on sustained heart rate — not just movement — so lighter or moderate activity may show lower numbers than other devices that rely on motion sensors.

  • WHOOP also recalibrates your metrics every three weeks, so small differences usually even out over time.

1 Like
3

This is the kind of unhelpful answer that alienates your customer base. Clearly there is a problem with Whoop MG, and a quick review of Community comments reveals these problems are widespread and well-documented. However, rather than acknowledging it and pledging to fix it, you tell the customer to adjust the placement of the device (again), and update firmware (again), and to remember that Whoop has a super fancy algorithm that is never wrong (again), essentially making it a customer problem rather than a Whoop problem.

Do better.

1 Like
5

Thank you for pushing this, and you do NOT sound pompous at all. There is something rotten going on with Whoop, and they are in hard core denial mode. I’ve gotten some very weird metrics that simply don’t make sense. I’ve tried to push back, and the answer is always the same as you received today: adjust the placement of the device, update firmware, our algorithm is never wrong, trust the ‘science’ behind Whoop.

Don’t stop pushing!

1 Like