VO2 Max Only one running watch brand admits its VO2 Max and recovery estimates aren't perfect Polar lets you test your fitness level, muscular recovery, and sleep recovery manually, instead of blindly trusting its algorithm. I walked 10,000 steps a day for a month. Here’s what happened Do you need to walk 10,000 steps a day? It depends on your age and fitness level. But in my case, I really did get healthier. Be an expert in 5 minutesGet the latest news from Android Central, your trusted companion in the world of AndroidContact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MOST READ1OpenAI now has an AI model with vision, and everyone else should be scared2Motorola smartphones face sales ban in a major EU market thanks to a patent lawsuit3I'm giving up on Chromebooks and switching to a Surface instead4Google and Apple's cross-platform unwanted tracking notifications are finally rolling out on iOS and Android5Google showcases a potential answer to GPT-4o ahead of I/O