https://uncaffed.com/blogs/all/how-to-do-a-caffeine-reset-without-the-headaches 2026-10-15T18:55:33+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-taper-vs-cold-turkey.png?v=1790183315 How to Do a Caffeine Reset Without the Headaches Step chart: cold turkey drops 160 mg to zero overnight, while the Uncaffed taper steps 160, 120, 80 and 40 mg a day over 20 days, then 10 days of Flow with no added caffeine https://uncaffed.com/blogs/all/why-your-afternoon-coffee-is-keeping-you-awake-caffeine-and-sleep 2026-10-15T18:55:46+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-sleep-cost.png?v=1788644376 Why Your Afternoon Coffee Is Keeping You Awake Bar chart of sleep lost to caffeine: 45 minutes of total sleep, 11.4 minutes of deep sleep, and over 60 minutes when taken 6 hours before bed https://uncaffed.com/blogs/all/the-best-time-to-drink-coffee-for-peak-performance 2026-10-15T18:55:40+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-morning-window.png?v=1788644378 The Best Time to Drink Coffee for Peak Performance Schematic curves showing cortisol peaking 30 to 45 minutes after waking while adenosine slowly builds, with the 60 to 90 minute coffee window marked https://uncaffed.com/blogs/all/caffeine-withdrawal-timeline 2026-10-15T18:55:14+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-withdrawal-timeline.png?v=1788644379 Caffeine Withdrawal Timeline: What Happens, Hour by Hour Timeline of caffeine withdrawal: quiet for 12 hours, onset at 12 to 24 hours, peak at 20 to 51 hours, then a tail lasting up to 9 days https://uncaffed.com/blogs/all/energy-drinks-vs-coffee-caffeine 2026-10-15T18:55:29+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-drinks-ranking-2026.png?v=1790264783 Energy Drinks vs Coffee: Which Actually Has More Caffeine? Bar chart ranking UK drinks by caffeine in 2026, with high street coffees above Monster, Prime and Red Bull https://uncaffed.com/blogs/all/l-theanine-and-caffeine 2026-10-15T18:55:35+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-theanine-ratio.png?v=1788644382 L-Theanine and Caffeine: What the Research Actually Shows Six L-theanine and caffeine trials sorted by ratio, showing the four that found effects all had theanine at or above caffeine https://uncaffed.com/blogs/all/how-long-does-caffeine-stay-in-your-system 2026-10-15T18:55:31+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/caffeine-single-dose-30-hours.png?v=1788643990 How Long Does Caffeine Stay in Your System? Decay curve of a single 200 mg coffee drunk at 8am, halving every six hours and still faintly present the next afternoon https://uncaffed.com/blogs/all/caffeine-in-pregnancy-200mg-limit 2026-10-15T18:55:25+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-half-life-pregnancy.png?v=1789741314 Caffeine in Pregnancy: Why the 200 mg Limit Is Higher Than the Evidence Supports Bar chart of caffeine half-life: 6 hours in a non-pregnant adult, 8 in pregnancy, 15 in the third trimester and 80 to 100 hours in a newborn https://uncaffed.com/blogs/all/caffeine-in-high-street-coffee-uk 2026-10-15T18:55:23+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-high-street-americano-v2.png?v=1791070911 How Much Caffeine Is in High Street Coffee? UK Chains Compared Bar chart of caffeine in an americano of about 350 ml: Starbucks 89 mg, Pret 180, Caffè Nero 191, Greggs 257 and Costa 325, against the 200 mg single-dose guide https://uncaffed.com/blogs/all/caffeine-tolerance-reset 2026-10-15T18:55:27+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-caffeine-tolerance-timeline.png?v=1790264815 Caffeine Tolerance: How Long Does It Take to Reset? Timeline chart: caffeine tolerance builds over about two weeks of daily use, and withdrawal symptoms last 2 to 9 days after stopping https://uncaffed.com/blogs/all/why-caffeine-stopped-working 2026-10-15T18:55:42+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-daily-caffeine-4-weeks.png?v=1791552677 Why Caffeine Stopped Working: What the Research Says Bar chart of work done in a 30-minute cycling task. Daily caffeine group: 345 kJ on placebo, 383 kJ on caffeine before, 358 kJ after four weeks. Daily placebo group: 333, 354 and 352 kJ. https://uncaffed.com/blogs/all/caffeine-and-anxiety-how-much-is-too-much 2026-10-15T18:55:20+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-ordinary-day-470mg.png?v=1791589966 Caffeine and Anxiety: How Much Is Too Much? Bar chart of an ordinary day's caffeine: 2 mugs of instant coffee 200 mg, 2 cups of tea 150 mg, 1 can of cola 40 mg and a small energy drink 80 mg, 470 mg in total, past the 400 mg a day level EFSA treats as no safety concern. https://uncaffed.com/blogs/all/magnesium-bisglycinate-vs-glycinate 2026-10-15T18:55:38+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-label-500mg-vs-magnesium.png?v=1791591137 What Is Magnesium Bisglycinate? Glycinate vs Bisglycinate Bar chart. A label reading 500 mg of magnesium bisglycinate holds about 55 to 70 mg of magnesium, which is 15 to 19% of the 375 mg daily reference value. https://uncaffed.com/blogs/all/why-does-coffee-make-me-sleepy 2026-10-15T18:55:44+01:00 weekly https://cdn.shopify.com/s/files/1/0998/3036/6550/articles/chart-four-reasons-sleepy.png?v=1791591332 Why Does Coffee Make Me Sleepy? What the Research Says Four cards: going without (drowsiness starts 12 to 24 hours after the last dose), yesterday's late cup, the same dose every day, and different bodies (one liver enzyme handles about 95% of caffeine).