I received a polite request to start a separate thread about self monitoring with the Freestyle Libre, to avoid information being lost in another thread. I've started it here because it covers so many areas; LCHF/keto diet, exercise, BG monitoring to name but three. My normal regime (when I follow it) is coffee with butter and cream first thing, and usually one meal late afternoon. Minimal carbohydrates and nothing during the day is almost fasting, right? I checked when I started this, and occasionally afterwards, and I am making ketones so I should be in nutritional ketosis. Weaknesses - many, but includes beer and a single malt before bedtime. Also a belief (disproved) that my body can handle the occasional hit of carbohydrates such as bread. So here goes: I am a long term T2 and have managed for about 11 years on diet, exercise and Metformin. I went off the rails diet wise around December 2018 and my following HbA1c was over 7 which is not good news. I set about being much more strict with my diet, but was getting inconsistent test results from finger prick tests, so I eventually decided to self fund Freestyle Libre for long enough to try and establish what was going on in trends, and where I wasn't finger pricking. For example, what does my BG do overnight when I am sleeping? Last thing at night and first thing in the morning only give you spot checks; there is no real indication what is happening the rest of the time. Testing before and two hours after eating; so what happens in the meanwhile? Do I peak early, late, not at all? One thing continuous monitoring might show is exactly when I should be testing to measure the impact of meals. I go on long(ish) cycle rides; around 25-30 miles just fuelled by the butter and cream in the morning coffee. Sometimes I have low BG readings at the end, but sometimes quite high. Is my BG dropping and my liver dumping? Or what? I should be fuelled by ketones and need very little glucose so why isn't my BG always in the 4s and 5s after a 3+ hour ride. With such a broad ranging topic I will post individual bits just looking at one particular aspect so as not to lose stuff in a single massive post.