Trade too much
To be real there are many traders who loves doing multiple trades and at multiple coins too, it just depends on the person if you can handle the pressure and a lot of time for those trades. Yes, it is really hard but trust me it will be easy if you love doing multiple trades and trading many times a day.
if we see on the profitability, many trades dont mean it will get many profit too, because it's short term
few trade doesnt mean that it will get few profit too, if choosing the good one coin can be up drastically in the future
so, i agree that trade too much isnt good in trading and shouldnt do that