I neglected my duties to be online the rest of the day.
Don't you have a lot of chores to do?
I didn't have much to do at home.
It you have obligations then its good to make the time to fulfill them. If people are expecting you, they'll be let down if you don't show up. Let others know if you are unable to make an appointment with them.
I might take the time to go back to the gym.
I hope you can do your duties before you abandon people who might need your help. Internet addiction is also a real thing, if you think you are becoming dependent it is good to take a break.