As for your Europe trip, I highly recommend spending 3 nights in any city you visit. If you change cities every day or every other day you’ll end up spending most of your holiday on trains or in airports rather than seeing the places you flew all that way to see. So if Amsterdam and Barcelona are musts, I would add exactly one other city if you’ve only got 9 days. Unfortunately it’s not on your list, but the best and easiest one to add between them is Paris. There is a train from Amsterdam to Paris in a bit over 3 hours, and another high-speed train to Barcelona from Paris in 6 hours 27 minutes with no changes. Paris is easily one of the most impressive European cities for tourists, but if you’ve been there before and don’t want to go again you can obviously choose something else.
Never thought of Moscow as a Winter destination! It is quite the place to go especially after the world cup hype. I second Rajasthan, India as one of the best places to travel in December. Love this list, Wendy. I have even listed Rajasthan and other offbeat places to travel in December and January over here: https://www.thegonegoat.com/inspiration-and-tips/2018/11/29/the-best-places-to-travel-december-january

Since you’ve been to several of the top places in Asia already, and you love it, I think Bali might be your best bet. As I’ve written many times recently, I feel that the main tourist area of Kuta/Legian/Seminyak is just too crowded and overdeveloped to recommend, although it is interesting for a couple days and some nightlife. The arts and crafts town of Ubud is still nice, although also a bit crowded, but it’s not anything like a city so I still think you’d enjoy it.
Brazil, on the other hand, has a famous problem with petty crime in tourist areas so I wouldn’t recommend it for a woman and young child. Another to consider is Puerto Rico, which has a lot to offer including great weather, and it’s also more or less part of the US, so it’s fairly safe and well organized. Hotels in Puerto Rico are a bit expensive, but you should be able to get an apartment rental in the San Juan area (gorgeous, by the way) for a modest price if you are staying for more than a few days. Let me know if you have any other questions. -Roger
Located on the north Pacific coast of Costa Rica, the 15-mile peninsula is home to lush jungles, postcard perfect beaches, and five-star hotels. It is decidedly remote (the nearest “town” is a 45 minute drive away) but sometimes, remoteness is exactly what a winter getaway calls for. Though Papagayo is the kind of place where you might be tempted to never leave the confines of your resort—there’s an Andaz, a Four Seasons, and a community of luxury villas to rent—it also caters to adventure lovers, with activities like ziplining, jetskiing, and four-wheeling through the jungle. Stick with later in the month to avoid any lingering rain (rainy season goes from May to early November.)
Traveling during the last ten days of December means crowds and exorbitant prices throughout much of the world, but the first two-thirds of the month—before holiday airfares and hotel rates go into effect—can be a serene, value-laden, and just plain lovely time to vacation. Europe is all decked out for the holidays—with locals generally friendly and in high spirits; in the Southern Hemisphere, spring is in bloom; and in the Caribbean, Hawaii, and Mexico, hurricane season is over, the weather is gorgeous, and there are free upgrades galore.
St. Bart's is a French island and a member of the European Union. First discovered by Columbus in 1493 and named after his brother Bartolomeo, St. Bart's has been populated through the years by native Arawaks, pirates, French colonists, Swedish settlers, and French citizens attracted by the island life. Owned for a time by Sweden before being returned to France, St. Bart's capital, Gustavia, was named for a Swedish king, and the language, along with French, is used for many street signs. In Gustavia, visitors interested in the island’s history can explore 17th-century forts, a lighthouse, and the small Wall House Museum. With 14 public beaches, there’s one for every taste and activity, including a swimsuit-optional spot. Boating, windsurfing, kayaking, sunbathing, shopping, people watching, and exploring the island’s shallow reefs are favorite pastimes. Last September’s Hurricane Irma caused significant damage to the island, but recovery has been swift. After closing a year for renovation, Le Barthelemy Hotel & Spa has just re-opened. Set on the Anse de Grand Cul de Sac, an ideal area for watersports, the eco-friendly hotel emphasizes wellness, with an expansive spa offering hydrotherapy, sauna, and beach yoga. This perfect December island escape is accessible by air or ferry from nearby St. Maarten.
Hi Maria, Intermittent fasting is absolutely good for the Mitochondria. Keto diet should not be followed for long stretches of time due to the way long-term keto is affecting your body. Short periods of Keto is fine. As for mitochondria repair, diet, sleep, and exercise are absolutely key to making the mitochondria stronger and maintain their health. However, there are a lot of factors that are impacting your mitochondria so you cannot rely on diet, exercise, and sleep alone. Ari
Ah, November. The end of the year is nearing, and most of us haven't traveled nearly as much as we planned upon. Thankfully, the second to last month of the year boasts not one, but two, holiday weekends for you to cash in on some of those vacation days and take a little sojourn to somewhere special—with family, with friends, or maybe even your significant other. But where should you go? There are a ton of places where the weather is still warm in November. But if you are looking to cash in on the seasonal appeal, there are also scores of exotic locales which count November as the peak time to travel there ( 
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