Do I Actually Keep Any SKILLS From Challenges?

Did I actually keep any skills from the one week and one month experiments from this year. From reflex training to doing 10,000 reps to training the mind (rubik's cube). Did I keep all, a fraction, or lose all the skill gained in these short periods? Paid links to products featured in video: [Reflex ball set used in video] - https://amzn.to/4haHTmk [My Speed Cube] - https://amzn.to/3KRaim1