It's OK to modify your fasting approach, especially as you take note of what is happening to your body. The concept is refocusing NOT hurting yourself.
Daily Discipline – The Art of Fasting
Tag: Joel 2:12
Daily Discipline – The Practice of Fasting and Prayer
Fasting is often times a forgotten discipline for believers. But it is a powerful tool that helps us re-center our hearts and minds on God and helps us focus our prayers more meaningfully.