Popular belief says if you really want to make a big change, focus on one new healthy habit at a time. But Stanford University School of Medicine researchers say working on your diet and fitness simultaneously may put the odds of reaching both goals more in your favor. They followed four groups of people: The first zoned in on their diets before adding exercise months later, the second did the opposite, the third focused on both at once, and the last made no changes. Those who doubled up were most likely to work out 150 minutes a week and get up to nine servings of fruits and veggies daily while keeping their calories from saturated fat at 10 percent or less of their total intake. 

Omega-3 fatty acids are essential for the neurological and early visual development of your baby and for making breast milk after birth. Aim for two weekly servings of cold water fish such as salmon, tuna, sardines, herring, or anchovies. Sardines are widely considered the safest and most sustainable fish to eat, while seaweed is a rich vegetarian source of Omega-3s.
In our review, we found that fortification interventions that provided fortified foods reached women of all life stages through home visits, community distribution centers, local markets, and retail stores. Delivery of fortified foods in school-based programs, at work, and in maternal–child health centers were also used to target school-age children, women of reproductive age, and pregnant and lactating women that were engaged with those facilities (37, 72–74, 84). There was mixed evidence that consumption of fortified foods reached all socioeconomic groups. Some studies showed differences in consumption between nonpoor and extremely poor, and between urban and rural stakeholders (33, 64, 85). Women who have restricted access to markets, depend largely on locally grown foods, are in areas with underdeveloped distribution channels, or have limited purchasing power, might have limited access to fortified foods (64). Additional research is needed to address implementation gaps and to determine the best platforms for reaching high-risk populations.
Getting enough water also is important. Many experts recommend at least eight 8-ounce glasses of water daily—more if you exercise frequently or are exposed to extremes of heat and cold. The 2010 Dietary Guidelines for Americans emphasize drinking more water and other calorie-free beverages, along with fat-free or low-fat milk and 100 percent fruit juices, instead of calorie-packed regular sodas.