Its called Swing trading and it  is beneficial if you have a fundamental understanding of technical analysis but it isn’t essential. I would be very comfortable swing trading as long as you have been paying attention to the mood of the market and the previous days/weeks of that coin your trading. If you find a coin that you know is making DEV progress, making announcements and keeping the public engaged on twitter, etc, and you see the coin in the past few months has been in an upward trend but the past week or two its taken a dip. Sometimes dips can simply be big whales cashing out followed by subsequent FUD sellers due to the sudden price dip. If you can pick up on these then that is all you need in swing trades. You just have to DYOR to make sure the price isn’t dipping for a reason. (Example: Bitconnect shutting down).