strenuous

Indicates a great deal of effort or determination.

Refers to intense physical exercise.

Refers to any activity that requires a lot of physical effort.

A very demanding session of physical exercise.

A long and difficult walk, especially in the countryside or mountains.

Refers to the use of a great deal of physical or mental energy.

A walk that is physically demanding.

A long, hard journey, typically on foot.

A very strong and forceful expression of disapproval or opposition.