Trading during the day, often known as day trading, is an exciting way to trade. Day trading involves trading financial instruments within a single trading day.

The allure of day trading lies in the potential to earn money rapidly. But, it's vital to grasp that this form of trading comes with its own share of risks.

Efficient day trading requires a firm understanding of the trading landscape. It's vital to track market news, fully knowing how various events can impact the price of assets you’re interested in.

Also, successful day traders embrace managing risk. This involves placing stop loss orders to curb potential losses and only investing funds that you can afford to lose.

An important aspect of day trading is the ability to make rapid decisions. The markets can alter quickly, and having the capacity to make informed decisions under pressure can result in successful trades.

One of the most useful day trading techniques is called ‘scalping’. This involves making multiple trades within a short time period, hoping to make money from small price fluctuations.

Furthermore, ‘momentum trading’ is another popular technique. This method involves acquiring stocks that are rising quickly and day trading selling them before the trend reverses.

Day trading is for the brave. It requires a great deal of market understanding, fast decision-making skills, and a strong risk appetite. However, with the proper knowledge, technique, and control, you can turn day trading into a profitable venture.

In conclusion, day trading, or ‘trading the day’, is a risky, yet rewarding trading style. It requires in-depth market knowledge, quick decision-making abilities, and the potential to deal with risk effectively. With the appropriate approach and continual learning, you have the potential to make lucrative trades and increase your investment portfolio.