Not every study needs to have a power analysis, but every study needs a sample size justification. I discuss 6 approaches, and 6 ways to think about which effect sizes are of interest in the study you are planning. online.ucpress.edu/collabra/art...

Always cool to see your research get shared by some more mainstream media. Our newest meta-regression looking at the optimal dose of stretching discussed by @lifehackerofficial.bsky.social

Have you ever wondered how long you need to stretch to maximise increases in flexbility? Our new meta-regression suggests 4 minutes per session per muscle group is optimal for acute increases, while 10 minutes per week is optimal for chronic increases.