For novelty, I am attempting a 'traditional' catholic fast this year.
In Ye Olden Days, before Catholics became, well, a bit soft, they would fast in a similar way to Muslims (but a bit more hardcore).
This 'traditional fasting' entails...
consuming just ONE meal a day, taken AFTER sunset, which does not contain 'flesh meat', eggs, milk or oil, (so no butter or cheese either), and no alcohol.
And no, I won't starve because Sundays are 'holy days' and don't count in the 40 days of Lenten fasting, so I will eat heartily then.
For added misery, on Ash Wednesday and Good Friday, it's total fast, which involves no food at all, just water. And Holy Week involves 'black fast', which means I give up my daily meal for just bread, herbs, oil and water.
For the 'spiritual' part I shall be doing the spiritual exercises of St Ignatius, singing 'stabat mater' daily, in latin, and fingering my rosary.