Female friend touching me?

Hello all, I’m a [straight] guy with a question; The other day I was hanging out with some folks and one of my good female friends asked me if she could touch my body (particularly my abdominal area) because she had seen pictures of me shirtless and admired my physique. With no objections, I allowed her to touch my body, and she spent the next 30 seconds feeling my upper body out and admiring it.

Is it normal for women to request such things from their male friends?
Female friend touching me?
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