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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
strenuous days
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "strenuous days" is correct and usable in written English. You can use it to describe days that are physically or mentally demanding. For example, "After a week of strenuous days at work, I needed a vacation." Alternative expressions include "demanding days" and "arduous days."
✓ Grammatically correct
News & Media
Wiki
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
4 human-written examples
Expert-led morning and evening yoga sessions – specially designed for skiers and snowboarders – bookend strenuous days on the pistes of La Rosière, France.
News & Media
As a result, by the end of your strenuous days, your willpower muscles are exhausted and you're left to your naked and defenseless self -- with zero control to stop the night-time munchies and time wasters.
News & Media
Professional snowboarders spend long and strenuous days traversing mountain peaks in freezing alpine conditions, sometimes sustaining brutal injuries in the process––or, at the very least, falling on their butts a lot.
News & Media
They believed "that the only education worth while in these strenuous days is that practical kind which teaches the student to actually do with his hand the things he learns about in books".
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
But it is a cherished rite of summer here, with many abalone aficionados camping at beachside state parks and grilling their catch after a strenuous day of diving.
News & Media
NetApp Endura rider Jan Barta and Bretagne-Seche's Jean-Marc Bideau raced clear of the peloton in the opening metres of the race and they were allowed to build up a lead of more than four minutes by a peloton that appeared keen to take it easy, following Sunday's strenuous day, which featured nine categorised climbs.
News & Media
One is to bury the tree branches, a strenuous days-long process that requires slowly bending the trunk.
News & Media
What's the best way to experience the famed Na Pali coast -- one of Hawaii's most pristine, remote and rugged attractions -- without struggling through a strenuous days-long hike?
News & Media
It also has 60 miles of walking tracks, ranging from short strolls to a strenuous five-day trail.
News & Media
I'd spent the full year with the team, and, looking around the room at that moment, I suddenly found myself thinking back to all the strenuous sixteen-hour days that go into the sixteen hours of a football season.
News & Media
So a reader of her diaries (of the five-volume complete edition, anyway) has to wade through a fair amount of rote record-keeping, panning for the nuggets: Brain rather dried up after 6 days strenuous London.
News & Media
Expert writing Tips
Best practice
In fitness or medical contexts, the phrase is effective for describing periods of heavy training or required recovery after surgery.
Common error
Avoid using "strenuous days" when you actually mean "stringent days". Strenuous refers to physical or mental effort, while stringent refers to strict regulations or conditions.
Source & Trust
80%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "strenuous days" acts as a noun phrase where the adjective "strenuous" modifies the plural noun "days". According to Ludwig, it serves to qualify a duration of time through the lens of effort and intensity. It is often used as the object of a preposition (e.g., "after "strenuous days"") or the subject of a clause explaining fatigue or willpower depletion.
Frequent in
News & Media
45%
Science
30%
Wiki
25%
Less common in
Social Media
5%
Formal & Business
10%
Reference
5%
Ludwig's WRAP-UP
In summary, "strenuous days" is a robust and grammatically correct expression used to describe periods of high activity and exertion. Ludwig AI indicates that while the exact two-word phrase has a specific frequency, its variations (such as "strenuous days-long" or "strenuous days of exercise") are ubiquitous in professional writing. It is particularly valuable in contexts where one needs to explain the depletion of energy or the necessity of rest following hard work. Whether you are writing a travel blog about skiing in France or a scientific paper on physical therapy, "strenuous days" is a precise and widely accepted choice.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
demanding days
Focuses on the high level of skill or effort required.
arduous days
Adds a sense of difficulty and significant physical effort.
taxing days
Emphasizes the draining effect on mental or physical resources.
exhausting days
Focuses on the end result of the activity (fatigue).
laborious days
Suggests repetitive or slow-moving hard work.
rigorous days
Implies a strict adherence to a difficult schedule or standards.
tough days
A more informal and common way to describe difficulty.
grueling days
Suggests extreme punishment or nearly unbearable effort.
intense days
Focuses on the high concentration or speed of activities.
vigorous days
Implies a more positive sense of energy and health.
FAQs
How do I use "strenuous days" in a sentence?
You can use it to describe demanding periods, such as "After several "strenuous days" on the slopes, I needed a long rest" or "The protocol requires subjects to avoid "strenuous days" of activity before testing".
What is a more formal alternative to "strenuous days"?
In formal or academic contexts, you might prefer "arduous days" or "demanding days".
Is "strenuous days" grammatically correct?
Yes, it is a standard adjective-noun pairing. Ludwig AI confirms its frequent usage in reputable sources like The New York Times and various scientific journals.
What is the difference between "strenuous days" and "exhausting days"?
"Strenuous days" describes the nature of the work performed, while "exhausting days" focuses on the physical state of the person after the work is done.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
80%
Authority and reliability
4.8/5
Expert rating
Real-world application tested