Vbab it sounds as if your DH wants you to have some 'me' time away from DS and as you have said to us, you want to lose weight, he is probably thinking the gym will kill 2 birds with 1 stone. As for whether you want to go to the gym and would actually use the membership, then I guess only you could answer that.
As you know I am a complete gym bunny (as is DH) and we both agree that our membership is worth it's weight in gold and we would probably rather get rid of Sky and other stuff before we sacrificed the gym if money was tight (as it is, we get a very good deal through my work so it only costs us £17.50 each per month). But I would go potty without being able to go, have a regular break from the DS's (when you are not doing other stuff like shopping, cleaning, cooking), and it makes me much more ready to deal with DS1.
Well, completely out of the blue, Sam woke up for a bottle at 1am this morning (sorry to those of you who are still feeding in the night ) He hasn't had a night feed since he was 10 weeks old so I was completely taken aback (so much that it took me 40 minutes of trying to settle him , giving him Calpol etc before I twigged what he wanted ). Is this a growth spurt do you think?? Of course the minute I fed him, he went very calm, fell asleep back in his cot straight away and slept until past 7 this morning. Not sure whether to give him an extra bottle today, a supper of porridge just before his bath or just leave it and accept a few night feeds (but I really don't want it to become a regular thing!!)