Probably not, walking with weights may cause injuries or aggravate carpal tunnel syndrome.

Holding a cell phone against the ear may harm the brain, say scientists in the Journal of Chemical Neuroanatomy. They exposed mice to radio-frequency radiation from phones for 20 minutes and found the exposure made the blood-brain barrier 71% more permeable (leaky). That’s a concern since a leaky blood brain barrier increases the risk that damaging compounds (like environmental toxins) can reach brain cells. To minimize the risk, they advise using Bluetooth earpiece or putting the phone on speaker.

-Journal of Chemical Neuroanatomy-

Canadian researchers tested the effect of 55 natural anti-cancer agents on two forms of virulent breast cancer cells and found piperine (piperine, along with its isomer chavicine, is the alkaloid responsible for the pungency of black pepper.) to be the most effective. Follow-up animal studies suggest piperine also thwarts breast cancer development. “Piperine forces precancerous cells to die, plus it blocks the growth of blood vessels that feed cancerous cells,” says study coauthor Aman Tedasen M.D. Experts theorized that humans could get the benefits by adding ¼ tsp. of black pepper to meals daily. Grinding whole black peppercorns yields the highest level of piperine.

If you are middle-aged, that night owl habit puts you at greater risk for health problems, even if you’re getting the same number of hours of sleep as your early-to-bed friends, a new study finds. “People who stayed up late faced a higher risk of developing health problems like diabetes or reduced muscle mass than those who are early risers,” says endocrinologist and study author Nan Hee Kim.