I want to rationalize and refine my definitions. Two ways to measure aggregate amount of daily workout — 1) measurement 2) effort

Effort implies self-regulation, combatting the (natural) tendency to quit. Instructor-led classes always help easy self-regulation.

Physical measurement ignores self-regulation or any mental exertion. It is based on measurable output by muscles, cardio, perspiration, heartbeat,,,

eg: Hatha or yin Yoga is low physical but huge effort
eg: Adding up (vertically) stairs/day .. is high physical, lower effort. In contrast, continuous climbing is higher effort.
eg: Jogging is high physical, lower effort
eg: Rope-skipp is very boring, therefore high effort lower physical

“Low effort” is relative and never means easy. Keeping up active days, hitting 3 active days a week for a month is absolutely demanding and never easy, regardlessof the workout.

my 5/wk routine is the /exemplification/ of successZ, and really tough except during a few weeks when I’m motivated and confident. (However, such a power surge “honeymoon” rarely lasts a month.)

Most adults (like 98%) after leaving school/army and before retirement would find it really tough. (Servicemen and Pre-college students are different because they have physical training + fitness tests.)

Q: In their views, which type of workout of this bpost is most frequently questioned as too light?
A: jump-rope, squat… but “their view” is based on popular perception only.

Q: In my own view which workout is most frequently questioned as too light?
A: jump-rope, stairs

Frequency is the key and also the real challenge. To maintain frequency, I increase variety, and incorporate incentives.