Yet nearly all advertising for sanitary products encourages us to hide this chunk of our lives – three thousand days for most women – by preventing leaks that might embarrass us and everyone else; by ensuring we don't, God forbid, smell of menstrual blood; by putting menstruation behind locked doors and safely enclosed in euphemism.
It is easy to see who has not participated, and encourages all students to do so.
Strange enough to be worth a watch by grown-ups too, John Motson and England's Rachel Yankey join forces in a new show that encourages children into football by emphasising passing, thinking, skills and playing as a team.
The government will today propose the biggest overhaul of child maintenance for a decade, arguing that the current system encourages conflict between parents.
Another accusation may be that getting paid to tweet encourages self-censorship.
The biennial Red Nose Day UK fundraiser encourages people to "do something funny for money" in their school, community or workplace.
The Islam of north Africa, where most of France's Muslims come from, belongs to the Maliki school – a tolerant and easygoing tradition that does not force women to wear veils and encourages such non-fundamentalist activities as music, Sufi mysticism, superstition and magic.
Reassertion of a party's moral purpose encourages its supporters to withstand the periods of hard pounding that every government has to endure.
Confirming the UK's withdrawal, the new Foreign Office minister, Lady Anelay, highlighted an "unintended pull factor"' of search and rescue: "that it encourages more migrants to attempt the dangerous sea crossing, thereby leading to more tragic and unnecessary deaths".
The MEP is a friendly and non-confrontational style of learning that encourages classes to engage in pupil-led discussions to find solutions to maths problems, so the teacher orchestrates the activities but does not lead the lesson in the traditional way.
Whereas European governments which have been building high speed lines have a policy of cheap fares which encourages their use, in Britain the government – whether Tory or Labour – insists on a "business case" and a rate of return on the investment.
