Exercise helps regenerate neurons in the brain
You wanna be “better, stronger, faster”, smarter? Forget bionics–exercise for an hour a day and all that will happen for you, according to new studies.
According to the article neurogenesis is also aided by moderate alcohol consumption, marijuana, socializing, a lot fat-low suger diet; and chocolate (as well as blueberries, grapes, and black tea) helps aid in improving spacial memory.
Stress (as well as high fat, and sugar diet) is a big factor in deterioration of the ability to produce new neurons.

Exercise May Boost ‘Good’ Cholesterol
We all know the aerobic exercise is good for the heart, and losing weight, and reducing cholesterol levels, but a new study (see the link above for more details) has concluded that it’s how long yiou exercise, and not the intensity, that boosts the HDL (good) cholesterol. Exercising for 2 hours a week in sessions longer than 1/2 hour, get you the HDL benefits.
No word on whether it’s just aerobics, or if medium intensity strength training sessions of over 1/2 hour will help also.
More here and here:

Only exercise duration, and not frequency or intensity, was associated with a change in HDL-C levels in the analysis. When the participants exercised for 23 to 74 minutes per session, each 10-minute increase in exercise duration corresponded to a 1.4-milligram per deciliter increase in HDL-C level. “This suggests that in improving blood HDL-C values, increasing time per session is better than performing multiple brief exercise sessions when total time for exercise is limited, as is the case for many people,” the authors write.