Breathing methods for sleep are supposed to ease nighttime anxiety — why do they make mine worse?

The 4 7 8 method doesn't work for me when I'm anxious, but this psychological hack always helps me fall asleep in minutes.
Overdrive

FMCSA's random drug testing rates for 2026, and more HOS-relief and other regs news

The random drug and alcohol testing rate for FMCSA-regulated workers hasn't been changed since 2020. Plus, FMCSA proposes ...
IEEE

Transient Fault Current Calculation Method for the PV Grid-Connected System Considering Dynamic Response of PLL

Abstract: The transient fault characteristics of photovoltaic (PV) grid-connected systems are highly dependent on the dynamic response of control links. The phase-locked loop (PLL) in the inverter ...
IEEE

A Hybrid Inversion Method Based on SDM and ANNs Considering Electromagnetic Response Laws

Abstract: Among the inversion methods for airborne transient electromagnetic (ATEM) data, the hybrid inversion method integrates the iterative optimization framework with artificial neural networks ...