Deep Sleep Is a Training Zone, and You’re Getting Locked Out of It
You track power and intervals. The training zone you are probably not protecting is deep sleep. After 50, slow-wave sleep shrinks, growth hormone drops, and Tuesday's hard work stops sticking the way it should.
The Real Reason You’re Not Improving (It’s Not Your Training)
You've been training consistently for 18 months and you're still not getting faster. The first thing I look at has nothing to do with your training plan. Most coaches think the formula is simple: Training + Fueling + Recovery = Improvement. That's not wrong — but it's dangerously incomplete. The answer is probably in your bloodwork. And your doctor almost certainly missed it.

