I have tried low carb in the past. When I was 40 and 82kg I started with that for about 2 years. Then I started going to the gym, then started cycling. It was when cycling became the major portion of my fitness routine (2016) that carbs starting coming back into my diet. 2014 was my first A1C test (Dr. started including it in blood panel) and it was 5.7%. Dr. wasn’t too concerned, but said to monitor. At that time I was going to the gym regularly (no cycling), at a healthy weight, and probably was low-ish carbs.