Strength training
Learning Center
Superslow strength training: Does it work?
Superslow strength training can help you add variety to your strength training routine.
Suggestions as you consider your future career
Think about these ideas as you consider what skills and career you'd like to pursue in the future.
Sperm: How long do they live after ejaculation?
After ejaculation, the life span of sperm depends on the circumstances.
Skin changes during pregnancy: What can you expect?
Find out about common skin changes during pregnancy, including pigmentation changes, varicose veins, acne and stretch marks.
Silicone breast implants: What happens if they rupture?
Understand the health effects of ruptured silicone breast implants.
Repeat C-sections: Is there a limit?
Repeat C-sections are common — but each C-section is generally more complicated than the last.
Prenatal vitamins: OK for women who aren't pregnant?
Prenatal vitamins: Why they might not be suitable if you're not pregnant.
Premenstrual dysphoric disorder: Different from PMS?
Extreme moodiness, intense sadness or marked irritability in the days before your period — along with your usual PMS symptoms — could be PMDD.
Pregnancy constipation: Are stool softeners safe?
Pregnancy constipation is common. Know how to safely treat it.
Pregnancy and hot tubs: What's the risk?
Understand the possible risks of hot tub use during pregnancy.
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