Having trouble sleeping at night? Well, all you need is just a warm and frothy glass of milk! (No kidding, really.)

According to a 2007 health article on The New York Times, milk is said to contain Tryptophan, a sleep-inducing amino acid. However, milk's role as a pre-bedtime sedative has less to do with Tryptophan -- which has to move across the brain-blood barrier, often unsuccessfully, in order to have a sleep-causing effect -- than with psychology. Scientists had said that routinely drinking a warm  of milk before going to bed is just as soothing as your old blanket.

Listed here are some of the best milk frothers that will give you the nice warm sleep you will need for tonight. To give you a good night's sleep, here are 8 of the best warm frothers currently available on Amazon:

1. Secura Automatic Milk Frother (250ml)
(photo from amazon.com)

The Secura Automatic Milk Frother is simple to use: just press the On/Off button and release immediately to make hot milk. Available in 250ml and 500ml sizes, it features a detachable base, a stainless steel exterior with vacuum insulation and maximum level indicators for the milk warmer and frother, and comes with a free cleaning brush.

2. Zeppoli Milk Frother
(photo from amazon.com)

With its classic design, the Zeppoli Milk Frother lets you experience the world of authentic milk beverages! It can quickly heat up to 150 degrees, heating up to 8 ounces of milk in less than 3 minutes, and comes with a frothing whisk as well as a Silicone scraper for cleaning off dry/burnt milk.

3. Souvia Automatic Milk Frother
(photo from amazon.com)

The Souvia Automatic Milk Frother works with any kind of milk! Featuring a circular dial for adjusting the desired drink temperature, it comes with a 700ml carafe -- with a jug spout for spill-free pouring -- that is enough to serve the whole family or group.

4. Vivreal Milk Frother
(photo from amazon.com)

In stock Dec. 29, the Vivreal Milk Frother warms your milk in just seconds! Featuring an angled spout that reduces spillage, Auto Shut-off and Boil-Dry protection, it has a maximum capacity of one cup for heating, and comes with a free brush to clean up the machine after use.

5. Chef's Star Frother and Steamer
(photo from amazon.com)

Featuring a 250ml capacity for hot milk and a 360-degree rotating power base that can be detached for easy handling, the Chef's Star Automatic Frother and Steamer heats warm milk in less than a minute! It is easy and safe to clean up, and has a non-stick interior that leaves no traces of milk after cleaning.

6. Breville The Milk Cafe
(photo from amazon.com)

Using induction heating and spinning, The Milk Cafe by Breville creates small bubbles in your drink, so it does not have to create a bubble bath in order for it to creamy and tasty. It has a jug with a 3-cup capacity, and automatically turns off once the desired temperature of your drink is reached.

7. Bayka Milk Frother
(photo from amazon.com)

The Bayka Milk Frother heats milk and creates thicker and smoother froth with just the touch of a button! Featuring an angled spout and a detachable non-slip base, it can heat up to 150 degrees Fahrenheit when making hot frothy milk.

8. Miroco At-Home Cafe Milk Frother
(photo from amazon.com)

Featuring an insulated double-wall design with a non-stick coated stainless steel cup, the Miroco At-Home Cafe Milk Frother brings the right foam to your warm milk. It has an ergonomic grip that lets you pour your drink safely, and automatically turns off once the milk is ready.