Breathing techniques, app development, and what I'm learning along the way.
A 2023 Stanford RCT found cyclic sighing beat mindfulness meditation on mood and respiratory rate. A 2025 clinic trial extended it to acute pain. Here is what the research shows.
Compared 9 breathing apps on Apple Watch, organized by goal: HRV training, stress, sleep, anxiety, guided coaching, and more.
A developer's honest walkthrough of daily breathwork with haptic guidance on Apple Watch. Walking practice, sauna sessions, and the 20-minute daily goal that keeps me consistent.
HRV is trainable. A 4-week breathing protocol backed by 223 studies, with Oura Ring tracking tips and a wearable comparison for Apple Watch, Whoop, and Oura.
Why 5.5 breaths per minute puts your cardiovascular system into resonance. The research behind coherent breathing, from Rutgers lab studies to ancient traditions.
A 2022 meta-analysis of 223 studies confirms slow breathing stimulates the vagus nerve. Learn the science, optimal breathing rates, and a simple daily protocol.
A science-backed comparison of box breathing and 4-7-8 breathing. When to use each, how box timing durations (4, 5, 6, 7 seconds) change the effect, and how to progress.