Germany boss Joachim Low has apologised after television cameras caught him putting his hands down his trousers and smelling his fingers.
Low was ridiculed on social media for his sideline antics during his side's Euro 2016 victory over Ukraine.
"It was adrenaline and concentration. I will try to behave differently in the future," said Low, 56.
"I saw the pictures and obviously sometimes you do things subconsciously. It happened and I am sorry."
Striker Lukas Podolski has also defended his coach, and said the incident was "not an issue" in the Germany camp.
Germany's second Group C match is against Poland on Thursday.
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