By Frances Harrison
Religious affairs reporter, BBC News
Health officials in the Philippines have issued a warning to people taking part in Easter crucifixion rituals.
Crucifixions are an annual event in the Philippines
They have urged them to get tetanus vaccinations before they flagellate themselves and are nailed to crosses, and to practise good hygiene.
On Good Friday dozens of very devout Catholics in the Philippines re-enact the crucifixion of Jesus Christ.
It is something that has become a huge tourist attraction, although the Church frowns on the practice.
The health department has strongly advised penitents to check the condition of the whips they plan to use to lash their backs, the Manila Times newspaper reports.
Real nails are used in the re-enactments
They want people to have what they call "well-maintained" whips.
In the hot and dusty atmosphere, officials warn, using unhygienic whips to make deep cuts in the body could lead to tetanus and other infections.
And they advise that the nails used to fix people to crosses must be properly disinfected first. Often people soak the nails in alcohol throughout the year.
Every Good Friday, in towns across the Philippines, people atone for sins or give thanks for an answered prayer by re-enacting the crucifixion of Jesus Christ.
In the northern city of San Fernando alone there will be three separate improvised Golgothas - the biblical name for the hill where Jesus was crucified.
Four people there have pledged to have their feet and hands nailed to wooden crosses, while others will flog themselves while walking barefoot through villages.
Sometimes people repeat the penance year after year, like the fish vendor who will be nailed to the cross for the 15th and last time on Friday to give thanks for his mother's recovery from tuberculosis.
With long hair and a beard, wearing sandals and a crown of thorns, he is tied with cloth to the cross but also has nails driven through the flesh of his hands and feet, avoiding the bones.