A garage-built Alzheimer drug shows how far DIY biotech has come
runtimewire.comu/JollyGreenJarju — 2 days ago
r/DIYbio
What I learned about HRV from logging ~3,000 meditation sessions with pre/post measurement
Spent the last 18 months building biofeedback tooling that measures HRV before and after every meditation session. Now have ~3,000 paired data points across myself, beta testers, and the early user base. Some patterns surprised me — sharing in case anyone's running similar n=1 or n=many experiments.
1. The exhale matters more than the session length. 5 minutes of 4-7-8 breathing (long exhale) consistently produced larger HRV jumps than 20 minutes of breath-awareness meditation. Vagal stimulation from extended exhalation > sit time. Holds across roughly 80% of sessions in the data set.
2. The 30 minutes BEFORE the session predicts the HRV gain. Coffee, scrolling, and arguments in the prior half-hour reduced post-session HRV by ~15-20% versus a calm pre-session window — even with identical session content. The body shows up to meditation with state baggage; that baggage limits how high HRV can climb.
3. Sleep-debt cohorts respond differently. Users with <6 hours sleep had bigger HRV bumps from short box-breathing (3-5 min) than from longer body scans. Possibly because deeper meditation requires nervous-system resources that depleted users don't have. Mini-practices > long practices when fried.
4. Overnight HRV (21:00–09:00 window) predicts the day's session response. Built a "recovery state" classifier that pulls overnight HRV and groups the user into thriving / good / fair / low (calibrated against Nunan 2010 population ranges). Recommendation strip then adjusts: low-recovery days → body scan or 4-7-8; thriving → focus sessions. Consistent practice adherence went up ~30% once the system stopped recommending the same thing on every state.
5. Per-session-type rankings drawn from each user's own data beat generic "best practice" advice. "Body scan reliably +8 ms for you" is way more motivating than "body scans are good for stress." Personalised data > general wisdom, every time.
6. Habit consistency improved dramatically when "missing one day doesn't break the streak." Most habit trackers punish the gap. Built a forgiving-streak model with an automaticity ring filling toward ~66 days. Users hit the 66-day mark at much higher rates than the rigid-streak cohort. The grace mechanic isn't soft — it's how habits actually form per the behavioural literature (Lally et al. 2010).
Anyone else logging paired pre/post HRV around interventions? Particularly curious about ultra-low-state days — what works for you when you wake up with HRV at the bottom of your range?
u/Ecstatic-Level667 — 4 days ago
▲ 6 r/DIYbio
From Hobbyist to Biotech: Extracting Chitin and Creating Bio-films from Mealworm Exoskeletons
Hi everyone,
I am a high school student deeply involved in biotechnology and material science. Over the past year, I’ve transitioned my hobby from simple insect farming to a more research-oriented operation focusing on Tenebrio molitor (mealworms).
My focus is currently on the "circular" potential of this operation. I am moving beyond selling live feed to explore:
Chitin Extraction: I am experimenting with chemical extraction to obtain high-purity chitosan and turning it into biodegradable bio-films.
Waste Transformation: I’m running controlled tests on the gut microbiome’s ability to digest polystyrene, aiming to turn plastic waste into organic compost (frass).
I’m looking for advice from those who have navigated the "bench-to-market" transition in materials science:
Commercialization: What is the most efficient path to monetize frass and chitosan? Are there specific industrial niches (agriculture, water filtration, packaging) that are more welcoming to small-scale innovators?
Scalability: I’m designing my own semi-automated extraction setup. What are the common "bottlenecks" in scaling up a DIY chemical extraction process without industrial-grade equipment?
Networking: Are there specific communities or forums for "Insects-as-a-Resource" (IAR) or bio-material startups that I should join?
I’m not just looking for business advice, but also technical and strategic feedback on my current path. Any insights would be incredibly valuable.
u/garip_kimse — 3 days ago
Dirt Cheap Labs (Quest Diagnostics)
A couple of providers, coaches and I whipped up this lab service since we were getting a lot of complaints about expensive labs: https://dirtcheaplabs.com
As the name suggests, these are meant to be dirt cheap (quest) labs.
We're using it for our clients, but if you guys want to join in, more volume helps lower our platform fee (selfishly) and you guys get (dirt) cheap labs.
There is a slight mark up on each marker just to cover the platform fee that gives us the bulk pricing, but this is by no means a business meant to make money.
If we can pay off this month's fee with relative ease, we can start offering labcorp as well.
Feel free to DM me if you want to help with the project at all!
u/Ok-Dirt-9947 — 8 days ago
▲ 4 r/DIYbio
3D printed Chemical laboratory - mostly accessories
Hi,
Maybe someone will be interested in it:
https://www.kickstarter.com/projects/mateusz2/chemforge3d
There mostly are some accessories, stands, trays, etc. and centrifuge, rotator, vortex and magnetic mixers.
If you have questions feel free to ask them :) I would also greatly appreciate some constructive complaining.
u/Ok_Health_1567 — 12 days ago
Finally got my peptide setup organized and consolidated to save some space
Trying to be a little less chaotic these days. 😂
I finally got around to organizing and consolidating my peps setup to save space and make everything easier to manage. I’ve been putting it off for too long and honestly wish I would have done it sooner. About time for a bigger fridge 😂
u/XTRA_KRISPY01 — 13 days ago