Does soreness mean it worked?
Five times the work produced the same ache. What the research on DOMS and the repeated bout effect says about reading soreness as feedback.
Where 10,000 steps came from, and the number the research supports
The 10,000 step target was a marketing decision. What 57 studies and 35 cohorts say about the daily step count that actually matters, and why it moves with age.
Training with pain: what the research says
What 37,000 people across 381 studies say about training with discomfort, and how a program works around a sensitive joint.
How long does it actually take to build muscle and get strong?
The honest three-phase timeline for building muscle and getting stronger, based on peer-reviewed research.
Grip strength by age and sex: the reference chart, and what the number predicts.
A percentile chart for adult grip strength by age and sex, the clinical threshold for sarcopenia risk, and what the number actually predicts.
Grip strength predicts dementia risk. The evidence, and what to do about it.
Participants in the lowest quintile of grip strength had a 72% higher dementia risk in the UK Biobank. What the evidence says and what to train for.
Strength training may be the most effective exercise for insomnia.
For adults with insomnia, strength training ranked first in a 2025 meta-analysis of 25 randomised trials. What the evidence actually shows about exercise and sleep.
Cardiorespiratory fitness may be the most modifiable predictor of how long you live.
How cardiorespiratory fitness predicts long-term mortality, what the research shows, and why small, sustained improvements compound over decades.
Show up at 5%. The research on training when life is heavy.
When you're stressed, the temptation is to skip the session. The research says even a light session improves mood, anxiety, and depressive symptoms. Intensity isn't the variable that matters.
Why every training block should start with a deload
Pulling back for a week feels like going backwards. A 2024 randomised trial found the opposite: a deload preserved hypertrophy, power, and endurance while sacrificing almost nothing.
Why skill-based training beats steady cardio for adherence
A 2015 Australian trial matched non-contact boxing against brisk walking for 12 weeks. The boxing group hit 79% attendance. The walking group hit 55%. The reason matters more than the workout.
Training through winter supports your immune system. Here's the research.
The "immune open window" theory got the post-exercise dip wrong. A 2018 review of the evidence explains why training through winter supports your immune system rather than running it down.