During fasting you are probably more open and prone to temptation than normal. "Go on, you're hungry, you need to eat", "you can have that smoke now, go on, you're doing such a good job you deserve a treat", "just this last time". Fasting can be the most difficult thing because the devil wants yo
u to fail. If you succeed he fails, if you fail he succeeds. The devil was always trying to make Jesus fail too. This is highlighted in today's Gospel according to Matthew.
"Then Jesus was led up by the Spirit into the wilderness to be tempted by the devil. And after fasting