We spend almost half  day running errands and the next option, inevitably, is to run out of energy boost and feel tired. So you decide to head on to the nearest convenience store to see what’s in store for you.  “Energy Drink” says the label with inviting packaging.  Is it the answer? Maybe yes, maybe not.
 
If you constantly see yourself in this situation, here are the things you should know before you gulp any energy drink from the convenience store’s fridge. Caffeine, which is the main ingredient of an energy drink, can provide you a fleeting energy boost. Aside from the temporary fuel up, it can also lead to some problems like:

• Nervousness
• Irritability
• Insomnia
• Rapid heartbeat
• Increased blood pressure

Avoid energy drink when you’re tired. Naturally, someone needs rest when tired, so imagine the changes in your system when you push a little bit through more. So then again, take a rest. Also, when tired, get adequate sleep. You can also massage as research shows that connection between massage and sleep. Consider including physical activity in your daily routine and of course a healthy diet.  
 
Occasional energy drinks are fine, but try to limit yourself 500 milliliters a day. Still, we encouraged you to consider these healthier alternatives:

Green Juices and Smoothies
The dark green vegetables such as spinach, parsley and kale used in green drinks are a great source of B vitamins which our body requires for metabolism to run at its peak.

Green Tea
It contains a smaller amount of caffeine than coffee does. Green tea helps improve mental clarity and performance, making it a great alternative to an afternoon cup of coffee.

Water
Dehydration is one of the main reasons we experience a drop in energy. If you think drinking water is boring, spruce it up by adding fruit slices or some blueberries or strawberries. The fruit provides some carbohydrates and B vitamins for an extra nutritional punch. All of the metabolic reactions that happen in our body happen in water.

Protein
Step away from the sugar. Researchers at the University of Cambridge found that protein trumps glucose when it comes to stimulating the cells that keep us awake and fuel the calorie burning fires. To boost alertness, keep your body running with amino acids found in lean sources of protein like eggs, edamame, and pork loin.

Carbs
Turns out good old-fashioned carb loading is still a great alternative to boost energy. According to a ​study​ published in the ​International Journal of Food Sciences and Nutrition, participants who ate primarily complex carbs experienced greater levels of alertness immediately following their meal.

If you really find yourself in need of an energy drink, only chug during emergency. Finally, we all know that moderation is the key. Take note of this: pregnant women, teenager, and breastfeeding mom should avoid this drinks even in the slightest consumption.

Source:
8 Alternatives to Energy Drink
http://www.mensfitness.com/nutrition/what-to-eat/8-alternatives-energy-drinks