REQUIRES A POWER METER OR A TRAINER THAT BROADCASTS POWER. With no power source paired to your device, the field estimates nothing — a basic trainer with a speed sensor will not do. How much carbohydrate your cycling training demands — live on your screen. Not what you ate, and not calories: the carbohydrate demand of the effort, second by second, on a curve estimated from your own numbers. ON SCREEN - the session's total carbohydrate, in grams, as the big number - on one line: the time, the g/h right now, and your power — larger than the other two, in your zone color - FEC demand — FEC (Functional Energy from Carbohydrate) estimates the demand of the ride: FEC 100 is the carbohydrate one hour at your reference power demands - time to the next FEC 100 - W' reserve when you go above your reference: how much of the effort above threshold is left, in % - average power appears once a minute - and, if you switch it on in the settings, a graph of your W' reserve over the last half hour: how much each attack spent and how much came back ON THE WATCH - a simpler screen, made for the wrist: the session's total carbohydrate as the big number, in the color that follows the FEC (blue, orange, red), and below it the g/h right now and the FEC — or the W' reserve while power is above your reference. No graph and no average power - the field reads the cycling power meter paired to the watch; when running, walking, hiking or swimming it estimates nothing MESSAGES WHILE YOU RIDE - at the interval you choose (5 min by default), a carbohydrate refueling suggestion as a range (0-30, 30-60 or 60-100 g/h), which rises with the intensity of your ride and never exceeds the demand you have just spent. A suggestion, not a prescription - a reminder that demand you do not refuel comes out of glycogen - a warning when power goes past your reference and the effort will not last an hour - and, if you are on another page of the device, the total and the suggestion appear on top of it, silently unless you turn on Sound alert (needs Connect IQ alerts enabled in the activity profile; not available on the Edge 520 Plus) AN ESTIMATE — the number comes from a model fed with your own data. It is not cardiopulmonary exercise testing, not calorimetry, not a lab test: no gas is measured and no sample is taken. IN YOUR FILE — demand is recorded in the activity: per second, per lap and the session total. Intervals.icu reads it: on new Edge rides, the total fills Carbs used automatically, with no setup. SETUP — weight, reference power (FTP) and, optionally, 5-minute power. PAYMENT — 7-day free trial, counted from your first ride in which the field counts (weight, FTP and power reaching the device). After that, the field needs an unlock code sold by GC Cycling & Nutrition: one payment per device. Edge: US$ 9.99; in Brazil, R$ 39.90 at launch, for the first 100 licenses, and R$ 49.90 afterwards. Watch: US$ 7.49; in Brazil, R$ 29.90. The license is yours and does not expire; what lasts a year is the assistance (device swap and support), and renewing is optional, at half the price. Before you press start, the field shows your device code; send it by WhatsApp +55 15 99107-5408, Instagram @gregorycinto or gccyclingnutrition.com.br to get your unlock code. Outside Brazil, checkout is not open yet — write to [email protected] and we will tell you the moment it is. Purchase terms, details and pricing: gccyclingnutrition.com.br/carb-demand#termos Edge 520 Plus, 530, 540, 550, 830, 840, 850, 1030, 1030 Plus, 1040 and 1050; and the fēnix 7, 8, 9 and E, epix (Gen 2) and Pro, Enduro 2 and 3, Forerunner 255, 265, 570, 955, 965 and 970, Instinct 3 AMOLED, tactix, quatix and D2 Mach 1 Pro watches. Original Edge 520 (not Plus): GC Demand & Fueling Lite, in this store. Informational only: not intake advice, and not intended to diagnose or treat any health condition. Compatible with Garmin Connect IQ; not affiliated with, sponsored or endorsed by Garmin.

1.3.5: optional sound alert. In the settings, the Sound alert switch, off by default: when on, the device beeps at the carb alert (at most once per interval chosen) and at each FEC milestone (100, 200, 300...); watches also vibrate. It follows the device's own tone and vibration settings. 1.3.4: new settings on your phone. Your carb target (g/h): optional, only if a dietitian prescribed it; with it, the alert shows your target instead of the suggested range. The carb alert interval (5, 10, 15, 20 or 30 min). And one switch for each message. With 2 or 3 fields on the page, total carbs now show large, with the label, the bar and the current rate — just like on a 4-field page. On watches, in a half-width field, the label and the bottom line are no longer cut off. 1.3.2: the carb suggestion is now large. When the field shares the page with others, the range (such as 30-60 g/h) shows in large digits in place of the total, alternating with it every 3 seconds; on the full page and in the alert on other pages it is large too. And the small field's CHO TOTAL (G) label grows where there is room, without shrinking the number. 1.3.1: internal improvements. Nothing changes on screen or in your settings. 1.3.0: Now on Garmin watches too: fēnix 7, 8, 9 and E, epix (Gen 2) and Pro, Enduro 2 and 3, Forerunner 255, 265, 570, 955, 965 and 970, Instinct 3 AMOLED, and their siblings (tactix, quatix, D2 Mach 1 Pro). On the watch the screen is simpler: total carbs, large, and below it the current demand and FEC — or the W' reserve while power is above FTP. Same 7-day free trial, same per-device unlock. On Edge: the small field's label grows with the field, and the reserve chart no longer freezes on the second ride.