Aside from carb flu, be warned that staying in long-term, continuous ketosis may have drawbacks that may actually undermine your health and longevity. To stay on the safe side, I recommend undergoing a cyclic ketogenic diet. The "metabolic magic" that ketosis brings to the mitochondria actually occurs during the refeeding phase, not during the starvation phase.
How Seconds Interval Timer works: Whether you're into cycling, running, lifting weights, cardio, stretching, boxing or MMA this interval timer will help you keep track of your work and rest periods during workouts. The Seconds Interval Timer app allows you to specify an overall time or program, high/low-intensity interval and rest time between sets. Especially if you have a lot of excess weight to lose, adding high- and low-intensity interval workouts to your diet plan can help you lose weight quickly. Customize your number of sets, countdown times, set times, low or high interval times, rest time, timer sounds, language and volume, playlists and more.
A systematic review in 2018 looked at 16 studies on the ketogenic diet in adults. It concluded that the treatment was becoming more popular for that group of patients, that the efficacy in adults was similar to children, the side effects relatively mild. However, many patients gave up with the diet, for various reasons, and the quality of evidence was inferior to studies on children. Health issues include high levels of low-density lipoprotein, high total cholesterol, and weight loss.
In one online review, a reviewer said the app recommended an 1,100 calorie diet. This is too low to get all of the nutrients you need to thrive. Though the reviewer said she got used to this calorie level, most people would find this amount to be severely restrictive and limiting and I would never advise anyone to eat this few calories. In my case, the app suggested 1,200 calories, which is also too low.