{"id":53150,"date":"2026-09-10T10:15:21","date_gmt":"2026-09-10T14:15:21","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=53150"},"modified":"2026-09-10T10:15:21","modified_gmt":"2026-09-10T14:15:21","slug":"health-sensing-and-readyness","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2026\/09\/10\/health-sensing-and-readyness\/","title":{"rendered":"Health Sensing and Readyness"},"content":{"rendered":"<p><a href=\"https:\/\/www.apple.com\/newsroom\/2026\/09\/apple-advances-health-and-fitness-capabilities-using-apple-intelligence\/\">Apple<\/a> (<a href=\"https:\/\/www.macrumors.com\/2026\/09\/09\/apple-watch-series-12-and-ultra-4-health-and-fitness\/\">MacRumors<\/a>):<\/p>\n<blockquote cite=\"https:\/\/www.apple.com\/newsroom\/2026\/09\/apple-advances-health-and-fitness-capabilities-using-apple-intelligence\/\">\n<p>The new Health Sensing System on Apple Watch Series 12 and Apple Watch Ultra 4 features new optical and electrical heart sensors, enabling higher-frequency heart rate and heart rate variability (HRV) measurements, a new readiness score, a more comprehensive Vitals overview with the addition of HRV, and an updated Heart Rate app.<\/p>\n<p>[&#8230;]<\/p>\n<p>Apple Watch Series 12 and Apple Watch Ultra 4 introduce readiness &mdash; a new feature that analyzes a user&rsquo;s recent activity, vitals, and sleep score, and then provides a single 0-10 score each day with a clear, actionable recommendation: Recover, Pace Yourself, Ready, or Go For It. This helps a user decide how to take on their workday or tackle their training plan.<\/p>\n<p>[&#8230;]<\/p>\n<p>A new Longevity tab analyzes a user&rsquo;s longitudinal health data for deeper insights into heart health, sleep, mental wellbeing, movement health, metabolic health, hearing, and nutrition. The tab includes Health Age, a new feature that uses Apple Watch data to show users how their metrics are tracking relative to their chronological age, informed by the best available science.<\/p>\n<\/blockquote>\n\n<p><a href=\"https:\/\/bsky.app\/profile\/mackuba.eu\/post\/3mv43ltzh2s25\">Kuba Suder<\/a>:<\/p>\n<blockquote cite=\"https:\/\/bsky.app\/profile\/mackuba.eu\/post\/3mv43ltzh2s25\">\n<p>I wonder how much of this new health stuff will work with older \/ SE watches&#8230; probably not much?<\/p>\n<\/blockquote>\n\n<p>Previously:<\/p>\n<ul>\n<li><a href=\"https:\/\/mjtsai.com\/blog\/2026\/09\/10\/apple-watch-ultra-4\/\">Apple Watch Ultra 4<\/a><\/li>\n<li><a href=\"https:\/\/mjtsai.com\/blog\/2026\/09\/10\/apple-watch-series-12\/\">Apple Watch Series 12<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Apple (MacRumors): The new Health Sensing System on Apple Watch Series 12 and Apple Watch Ultra 4 features new optical and electrical heart sensors, enabling higher-frequency heart rate and heart rate variability (HRV) measurements, a new readiness score, a more comprehensive Vitals overview with the addition of HRV, and an updated Heart Rate app. [&#8230;] [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2026-09-10T14:15:25Z","apple_news_api_id":"58b7db4b-aada-4adc-9984-48fc0883e9bb","apple_news_api_modified_at":"2026-09-10T14:15:25Z","apple_news_api_revision":"AAAAAAAAAAD\/\/\/\/\/\/\/\/\/\/w==","apple_news_api_share_url":"https:\/\/apple.news\/AWLfbS6raStyZhEj8CIPpuw","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[2],"tags":[992,2967,2968,1202,31,2887,1212,2928],"class_list":["post-53150","post","type-post","status-publish","format-standard","hentry","category-technology","tag-apple-watch","tag-apple-watch-series-12","tag-apple-watch-ultra-4","tag-health-app","tag-ios","tag-ios-27","tag-watchos","tag-watchos-27"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/53150","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=53150"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/53150\/revisions"}],"predecessor-version":[{"id":53151,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/53150\/revisions\/53151"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=53150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=53150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=53150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}