Speedcubing is a fun hobby. I don’t know anyone who has solved a cube fully without instructions.

Genetics probably. Some people are suited for endurance sports, others gain muscle more easily. I recognize myself from the description. Very hard to gain muscle/weight and eating enough feels like a chore.

These are all fast breakbeat rhythms. Drum and bass music is generally broken beats (as in not 4-to-the-floor) in 160-200 bpm tempo range with emphasis on drum and bass elements. There are a lot of subgenres with specific nuances.

Not equally myself, but you get used to doing things with the non-dominant hand surprisingly fast. Started using lefty mouse due to arm pain and maybe a week or two gets you to non-awkward basic usage.

Creed - Rain