But Santos told CNN that his players had to keep their emotions in check against Germany.

CNN: Economic turmoil has 'affected' Greece team at Euro 2012

Parents who may be feeling sad about "letting go" are warned to keep their emotions in check.

BBC: NEWS | UK | Education | First day at school? Be positive

Her younger sister, world number one Serena, sounds almost envious of Venus' ability to keep her emotions in check.

CNN: Venus Williams falls asleep on the job

If I keep my emotions in check, then I'm accused of not caring.

NPR: Before Congress, Clemens Insists He Is Innocent

Said Namie: Keep your emotions in check, and lay out a case that details how the boss is costing the institution money.

FORBES: How to Get Your Boss Fired

Says Namie: Keep your emotions in check, and lay out a case that details how the boss is costing the institution money.

FORBES: How To Get Your Boss Fired

"Three times, " said Chris, struggling to keep his emotions in check.

CNN: Fort Bragg families struggle with risks of war

Police inspector Louis Janssens, 59, and his second cousin Paul Alix, 61 - a retired industrial mechanic - also find it hard to keep their emotions in check when they talk about their grandfathers, orphaned brothers who fought together at the Yser and in Ypres.

BBC: Gathering century-old memories of wartime Belgium