The Journal

Train smarter, not just harder

Recovery science, training tactics, and stories from the LockIn90 community.

Featured

Dashboards feel powerful and change nothing. Here is the case for collapsing your physiology into a single decision.

Heart-rate variability is the most over-explained and under-understood metric in wearables. A practical primer.

Progress is built in recovery, not in the session. How to schedule rest like the adaptation engine it is.

Total hours get all the attention, but when you sleep may matter just as much as how long.