Bananas
Eating two bananas can give you enough energy for a 90-minute workout. This is because bananas contain a protein called tryptophan, which converts to serotonin. Serotonin helps you relax and can make you feel better too.

Potatoes
Potatoes are vegetables and they provide significant amounts of potassium and vitamin C. One medium-size (5.3 ounce) skin-on potato contains just 110 calories per serving, has more potassium (620mg) than a banana, provides almost half the daily value of itamin C (45 percent), and contains no fat, sodium or cholesterol.

Rice
The health benefits of rice include its ability to provide fast and instant energy, regulate and improve bowel movements, stabilize blood sugar levels, and slow down the aging process, while also providing an essential source of vitamin B1 to the human body

Rice Noodles
Gluten free, cheap and easy. Rice noodles are a good cheap source of calories that are better than top ramen noodles.

Porridge
Researchers in Mannheim, Germany carried out a dietary intervention with 14 patients who had uncontrolled type 2 diabetes and insulin resistance. The patients were introduced to a diabetes-appropriate diet containing oatmeal during a short hospital stay, then examined again four weeks later. On average, patients achieved a 40% reduction in insulin dosage – and maintained the reduction even after 4 weeks on their own at home.

Coconut Sugar
Coconut sugar isn’t a nutritional superfood, but it does offer more vitamins and minerals than white table sugar. It contains trace amounts of vitamin C, potassium, phosphorous, magnesium, calcium, zinc, iron and copper. Coconut sugar also provides small amounts of phytonutrients, such as polyphenols, flavonoids and anthocyanidin, and antioxidants. You’ll also find the B vitamin inositol, often used as a mood booster, in coconut sugar. Lower glycemic impact.

Root vegetables
A compound found in raw carrots reduced the risk of cancer developing in rats, according to a study published in the Journal of Agricultural and Food Chemistry. Rats that ate carrots, or feed with added falcarinol (a substance in carrots that gives the vegetable protection against fungal diseases) were one third less likely to develop full-scale tumours than rats not fed carrots or feed with falcarinol.