Dark chocolate 70%

Per 100 g, 70% dark chocolate provides roughly 570 kcal, 8 g of protein, 33 g of carbs, 42 g of fat and 11 g of fiber. It is a very energy-dense food: a whole 100 g bar alone represents nearly a quarter of a 2,400 kcal day. That density comes mostly from cocoa butter, a large share of which is saturated, although its stearic acid has a neutral effect on cholesterol.

The 11 g of fiber per 100 g is remarkable for a treat: it comes from the cocoa solids themselves. Dark chocolate also delivers useful amounts of iron, magnesium, copper and manganese, plus polyphenols (flavanols), which are its main health argument. Carbs stay moderate because the sugar share drops as the cocoa percentage rises.

The sweet spot is 20 to 30 g, or two to four squares. At 25 g you get about 140 kcal, 2 g of protein, 8 g of carbs, 10 g of fat and almost 3 g of fiber. That is enough to satisfy a sweet craving and enjoy the polyphenols without wrecking your calorie budget.

The trap is the half-eaten bar in front of a screen: 100 g disappears fast and you swallow 570 kcal without noticing. Weigh your portion, break it into squares you keep in a small box, and log it like any other food. In GymProgress, adding it to your diary takes a few seconds.

Read the ingredient list: it should begin with cocoa mass or cocoa, followed by cocoa butter and sugar, with a small amount of an emulsifier such as soy lecithin. Avoid added vegetable oils (palm, excess shea) and artificial flavors. The shorter the list, the better the bar.

70% is an excellent compromise: rich enough in flavanols, yet not too bitter for most palates. Above 85%, sugar falls but bitterness and fat rise, and you often eat fewer squares. Some very cocoa-rich bars can contain traces of cadmium and lead, so rotate brands instead of eating 100 g a day of the same product.

When bulking, its density is an advantage: a few squares easily add 150 to 300 kcal to a snack or a yogurt bowl without extra volume. Melted over porridge or grated into a shake, it makes meals more enjoyable and helps you hold a calorie surplus when your appetite is flagging.

When cutting, it becomes a craving-management tool: two squares after dinner often prevent a snacking binge. Count them, keep your portion at 15 to 20 g, and pick a higher percentage (75 to 85%) whose intense taste is savored slowly. It replaces neither protein nor vegetables, but it helps you stick to the plan over time.

Dark chocolate contains theobromine, a mild stimulant, and a little caffeine (about 20 to 40 mg per 25 g depending on the brand). That is far below a coffee, but enough to disturb the sleep of sensitive people if eaten late in the evening.

Before training, one or two squares can give a light lift and a bit of quick energy. If you sleep poorly, move your intake to the afternoon or the end of lunch. Also remember that chocolate is toxic to dogs, so never leave it within their reach.

Store dark chocolate in a dry place, between 15 and 18 °C, away from light and strong odors. Avoid the refrigerator, which encourages condensation and sugar bloom on the surface. A white film is still edible, but the texture is less pleasant. A well-sealed bar keeps for several months.

Classic mistakes: assuming dark chocolate is "light" because it is healthy, eating the whole bar, or choosing "filled" versions that add sugar and fat. Another mistake is counting on it for protein: 8 g per 100 g is little compared with its 570 kcal.

Dark chocolate is one of the richest everyday foods in magnesium: 25 g supplies a meaningful share of your daily needs. This mineral takes part in muscle contraction, sleep quality and stress management, three topics that matter to anyone who trains hard. It also provides iron, useful for oxygen transport, and copper.

Do not treat it as a supplement, though: to cover your needs, rely first on green vegetables, nuts, legumes and whole grains, and keep chocolate as a pleasant bonus. Paired with a banana or almonds after a session, it makes a small, balanced recovery snack.