why are you supposed to drink ice water to feel fetal movement?

This is in regards to a few of the answers I got earlier about not being able to feel my baby move after sex last night Im at 19 weeks.

Nursing Considerations and Management Pregnancy

Nursing Considerations for Pregnancy

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Tips for a Healthy and Happy Pregnancy

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Moms-to-Be Can Get Your Best Pregnancy Advice Here!

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Learn How to Have a Healthy Pregnancy

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Here Are Some Great Tips for Your Pregnancy

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Here Are Great Tips for Your Pregnancy

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Helping Your Pregnancy Go a Bit Smoother

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Has any other woman had mmuscle spasms in the lower abdoman?

Question about weird pain in abdomen while pregnant.?

Baby low at 31 weeks?

Is there usually less fetal movement right before labor begins?

Think baby may have dropped?

Fetal Movement At 15 weeks?

Can fetal movement in the third trimester cause contractions?

I'm 15 weeks pregnant, and wondering about fetal movement…?

Baby not moving as much as usual? Should I be concerned?

For ladies that have had 2 or more pregnancies, what is the earliest that you have felt fetal movement?

Should i be concerned about a sudden increase in fetal movement?

People that feel their baby kick?

Baby moving or Braxton Hicks?