AIO My husband joined a gym just as we had our newborn

My husband has just joined a gym for the first time in years, which is great for him in theory, but I can’t help feeling annoyed about the timing. We’ve just had a newborn and also have a toddler, so life is pretty chaotic right now and I’m running on fumes most days, plus I’m having my own health issues right now.

To be clear, he does contribute at home. He’s a good dad, he helps with the kids, and he pulls his weight with the housework. I’m not trying to paint him as someone who doesn’t do anything. I just feel like this stage of life is so intense, and adding something to his schedule that takes him out of the house regularly feels poorly timed and leaves me feeling a bit unsupported. He’s determined to go at least three times a week and does let me know when he plans on going.

I don’t know if I’m being unfair or overly emotional because of the newborn stage, or if it’s reasonable to be frustrated that he picked right now to start going to the gym again.

Would love some outside perspectives — am I being unreasonable?