The complete guide to Tabata training. 6 workouts, a 4-week plan, the original 1996 study, and how to get the most out of 4 minutes.
Five running interval workouts, an 8-week program, and plans from 5K to half marathon with pace guidelines.
What interval training is, why it works, and three beginner workouts to get started. Science-backed guide with a 6-week progression plan.
Apple Watch, Garmin, Whoop, Oura, Fitbit, and Polar compared. How each estimate works, validation studies, and which device fits your training.
A three-step decision tree to figure out if your low VO2 max is a watch error, normal for your age, or a real warning sign.
What the research shows about VO2 max, mortality risk, and life expectancy. Data from 750,000+ participants.
VO2 max charts for women by age, sex differences in fitness, menstrual cycle and menopause effects, and the best training approach.
What to expect at a VO2 max lab test. Preparation, protocols, costs, results, and how lab tests compare to wearable estimates.
Lactate threshold heart rate, % of VO2 max by training status, how to find yours, and the best training methods to raise it.
The complete guide to zone 2 training. Heart rate zones, sample workouts, the science of aerobic base building, and why it matters for VO2 max.
Every proven method to raise your VO2 max. HIIT protocols, zone 2 training, strength work, nutrition, recovery, and realistic timelines.
How the 12-minute run works, what your distance means, and how to estimate your VO2 max.
VO2 max chart by age and sex, what counts as a good score for each decade, and how to compare against elite athletes.
What your Garmin score means, how it's calculated, and the fastest way to raise it.
How the 20m shuttle run works, what your score means, and how to estimate your VO2 max.
Why it matters more than ever, and how to improve it with interval training at any age.
The most researched HIIT protocol for improving VO2 max. Exact intervals, heart rate zones, science, and training plan.
What your score means, why it might be low, and the fastest way to raise it.
