Minimizing Jet Lag

Watch the Video

Type the missing words

Speak and get feedback

Quiz vocabulary

Purchase to continue

Processing your order

Unable to process your order

Thank You

Test your knowledge
Quiz these words

CIRCADIAN
MELATONIN
HISTAMINE
INSOMNIA
PHYSICIAN

Start Restart Resume Try Again
Loading the player... Player initializing...
Loading the player... Player initializing...

Demo Mode
Track your Progress. Register for Free

Great Job!

Great Job!

words learned

correct

Great Job!

Register for Free to Track Progress

+100

You have used your 2 free lessons/month Upgrade to premium to continue

  • Watch Get unlimited access to over 9000 video lessons and 50 courses.

  • Learn Build your vocabulary to fluency with our time interval learning system.

  • Speak Speak and get instant feedback on your pronunciation & fluency.

  • Progress Tracking Get real time reports, weekly reports and "level up" tests.

Upgrade
Advanced
7,704 views

Register. It's free!

Teacher Webinar Sign-up.

Facebook
- or -
Email
I agree to the Terms of Service and Privacy Policy .

Comments

    Archived Comments

    • lily498 posted on August 26, 2011 9:09:17 AM

      these tips is very helpful. i alway feel tired after a long journey from east to west. using a aid medicine, excercise, some massage. great!!1

Top Scores

  • Last 30 days
  • All Time
  • 1 1506 superfluity
  • 2 1506 Koyoshi
  • 3 1506 Mohammad Mahdi
  • 4 1506 dajumao
  • 5 1506 lchan96
  • 6 1503 gottheguts
  • 7 1499 Lalito Garcia
  • 8 1494 Joy Kim
  • 9 1492 Riiin
  • 10 1492 dotanbae3
Privacy Policy | Terms of Use | Copyright © 2014 EnglishCentral, Inc.