Even people in jail have an hour or more of fresh air and exercise a day. Anat Kamm is entitled to this too and no doubt will receive such a privilege from the Supreme Court if an appeal is made. The lower court simply did not feel empowered to grant it on technical grounds (i.e., a previous Supreme Court decision which, however, did not address the issue).
Aden hotel used by Yemen goverment hit by grenade (Reuters)
from the article: Court rejects Anat Kamm's plea to 'get some air'