Sleep & Stress

Cortisol, often labeled “the stress hormone,” actually follows a healthy daily rhythm: it should peak shortly after waking, giving you

The “8 hours for everyone” rule is a myth. Here’s what sleep research actually says about needs in your 30s — and why quality matters as much as quantity.

Cortisol is supposed to fall at night and rise in the morning. Chronic stress can flip that pattern — and quietly wreck your sleep in the process.