Sandra Bullock's secret on how to perform Naked scenes on set.

Bullock is promoting her upcoming adventure movie "The Lost City"

Bullock recently revealed her technique to perform naked scenes on the set.

Her co-star Channing Tatum performed a naked scene in a film.

That means Bullock spends a lot of time watching her co-star's genitals.

To calm down, Sandra focused on Tatam's left inner thigh and relaxed.

So in this unique way, Bullock protected Tatum's dignity.

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