Trimarni Coaching and Nutrition

Just because you can run fasted doesn’t mean you should.  The ongoing debate "to fast or not to fast" sparks passionate discussions within the running community, with proponents highlighting benefits like improved fat adaptation and weight loss, while opponents raise concerns about performance, health, and weight gain. Pro ultrarunner @kilianjornet has publicly discussed occasional use of fasting before easy, low-intensity runs to understand how his body adapts to running with depleted glycogen (carb) stores. Meanwhile, other elite ultrarunners, like @mountainroche  attribute the “high carb revolution” as the primary catalyst for the increasing rate at which endurance running records are being broken. So, what’s the real story behind fasted running, and is it a strategy worth considering for your training? Check out my full article at HERE.

The line separating fasted workouts from disordered eating can become blurry for athletes. Proponents claim that fasted workouts have several significant health and performance benefits. The main reasons why athletes perform fasted training include: Increasing the rate in which your muscles use fat for fuel  Sparing glycogen stores   Increasing mitochondrial density Fat oxidation refers to the process of breaking down fatty acids. To oxidize fat, you need:  Healthy mitochondria (the powerhouse of cells where chemical energy is generated to power the cell's biochemical reactions).  Fat molecules (specifically triglycerides) to be broken down into glycerol and fatty acids. Fatty acids are then transported to cells and undergo a series of reactions (beta-oxidation) to produce acetyl-CoA to enter the citric acid cycle to generate energy. Oxygen (transported to the muscles by blood). Fat cannot be burned (or oxidized) without the presence of oxygen.  While there...