Some say it takes 40 days for some simple instructions to become a habit to a dog. All it takes is consistency and the pup will learn whatever you want them to.
How about humans? Is our brain trained to make a habit out of something we do 40 days in a row?
As far as I'm concerned, getting back in shape after a 2 month "I'm-not-gonna-do-anything-post-marathon-recovery" is hard. The first few days of Ironman training this year were hard and yes, I skipped a run the first week and skipped two swims 2 weeks ago. After that second skipped swim I've worked out 13 days in a row. So, in theory, I'm only 27 days away from making swimming, biking and running a habit.
I grew up an athlete. I did track a few years in elementary, middle and high school, swam when young, was always a runner and played tennis a few years. That's apart from basketball and soccer that I played in school too. But, was this a lifestyle? I was never really on a schedule... I just did it for fun.
Today, I find myself training for an Ironman. Where skipping a workout means a lot. Running, swimming and biking has become part of my daily routine... And I like it, but I still struggle to get myself to the gym or just simply out the door after work. Maybe in 27 days it will be less of a hassle and it will just be like having breakfast, like brushing my teeth... A habit.