I know this topic has been beaten to death, but I couldn't find anything with specifically what I had in mind so hear me out.
I was considering trying to split up workouts into 3 separate sessions. No increase in volume or anything, just split the workload throughout the day.
AM: Fasted cardio (walking or HIIT)
The idea in my mind is that your metabolism will be firing all day long, instead of primarily around the once daily training session. This may lead to better muscle gains due to increased effort in each session, better nutrient absorption and decrease in bodyfat due to an elevated metabolism throughout the entire day.
In your opinion, how much merit is there to this approach? Has anyone tried this?