Who assigns a meaning to one activity and not another?
Why is a session at the gym admirable but Hoovering the house drudgery? You would probably use the same calories for each and the latter activity is also useful as well as energetic. It is not helpful to allow the assumed judgement of others make you unhappy.
You probably needed a day treading water. This part of January, where it is still dark, cold and wet and there is no Christmas to look forward to, drains physical and mental energy. A day doing very little of note is a luxury. It might be different and a sign of something untoward like depression if one nothingy day follows another.
If it makes you feel better, OP, plan a more focussed and active day. I note that the shops are selling daffodils at a pound a bunch. Buy yourself a bunch and these sparks of yellow will cheer you and make you look forward to spring.
I did on Friday and my bunch of spring has cheered my heart and helped remind me my dull, isolated days will be lightened by the oncoming season.