This Day Our Daily Bread (Luke 11:3; LD 50)

When we think about the Christian life it is easy to think that the Lord just wants us to pray about the spiritual issues we might be having.  I mean the Lord is busy so why would he care about the evil flesh?  How do we know that the Lord wants us to be physically healthy?  Is it wrong for us to request that the Lord care for our physical needs?  How do we know that the Lord really will care for our physical needs?  How are these physical needs even a spiritual concern?  So, should we place before the throne of God our physical needs and burdens?