So I posted this a while back in the Short Grammar Questions section, but thought it deserved a proper post.
I asked whether these two sentences were correct:
If I’m tired tomorrow I will not go to the gym. 明日疲れたらジムに行かない。
If I’m not tired tomorrow I will go to the gym. 明日疲れなかったらジムに行く。
I was able to ask a Japanese teacher about this and she said that, while those are acceptable, these are better:
Does anyone have any thoughts on this or explanation? Thanks.