Pertussis immunization during pregnancy is generally safe and effective. Jupiterimages/BananaStock/Getty Images Related Articles 1 Importance of the Tdap Vaccine for Caregivers of Newborns 2 Can the Flu Vaccine Cause Illness? 3 Cholestasis of Pregnancy & the Gallbladder 4 Pregnant Woman & the Flu Pertussis, or whooping cough, is a bacterial respiratory illness caused by the bacterium Bordetella pertussis.

Daily Bikram yoga sessions can help you work toward weight loss. Hemera Technologies/PhotoObjects.net/Getty Images Related Articles 1 Calories Burned With Zumba vs. Hot Yoga 2 Calories Burned Doing Vinyasa 3 What Are the Differences Between Yoga & Aerobic Exercises? 4 Does Hot Yoga Boost Your Metabolism?

Standing toe touches are a mixed blessing. Pixland/Pixland/Getty Images Related Articles 1 Get a Big Butt & a Skinny Waist 2 Work Out Like a Gymnast 3 The Best Exercises to Firm Up the Gluteus and Inner and Outer Thighs 4 What Do Toe-Touching Exercises Do for You? Standing toe touches are about as old-school as an exercise can be, but that doesn't mean they're too old-fashioned to work.

The penalty area is directly in front of the net. Michael Regan/Getty Images Sport/Getty Images Related Articles 1 What Is the Trapezoid Behind a Hockey Goal for? 2 Volleyball Front Row Rules 3 Field Hockey Penalty Corner Rules 4 Can You Score Directly Off the Kickoff in Soccer? The penalty area -- or the 18-yard box as it's also known -- is an area of the soccer field with its own special rules.

Crunches aren't a sure-fire tummy trimmer. Comstock/Comstock/Getty Images Related Articles 1 Exercise to Lose Belly Fat While Watching TV 2 Lose Inches Around the Midriff 3 Nonmedical Ways to Treat Acid Reflux 4 Exercises to Get Rid of Deep Abdominal Fat Don't fall for the infomercial messages that promise to shrink your tummy and get you a six-pack when you use their exercise system.

Sometimes, a first pullup is a team effort. Jupiterimages/Goodshoot/Getty Images Related Articles 1 Do Female Lift-Ups 2 Do Tuck Sit Pull-Ups 3 Do a Pull-Up on a Gymnastics Bar 4 Machines That Work Out the Latissimus Dorsi Requiring back strength and an abundance of determination, the pullup can be the ultimate challenge for the fitness enthusiast, mostly because that first one seems to be so elusive.