Essay: What can be a good substitute if you are trying to cut back on caffeinated drinks?

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When I was a high school and university student, I sometimes drank caffeinated drinks, also known as energy drinks.

>>When I was a high school and university student, I sometimes drink caffeinated drinks, also known as energy drinks.
 It helped me, especially when I was tired, since they can give a positive impact on fatigue recovery.

>>  It helped me, especially when I was tired, since it can give a positive impact on fatigue recovery.
 They are also known as useful for metabolism and improving concentration.

>>  They are also useful for improving metabolism and concentration.
 However, there are some concerns about them.

>> Correct!
 They often cause insomnia and nervousness, which occasionally reveals as awkward hand shaking. 

>> Correct!
 Therefore, we need to consider carefully between the positive impacts and concerns about caffeinated drinks.

>> Correct!

>> OR:  Therefore, we need to carefully consider between the positive impacts and concerns about caffeinated drinks.
 One good new is that there are several substitutes for energy drinks.

>> One good news is that there are several substitutes for energy drinks.
 People says that tea such as herbal and green tea is a good alternative for coffee.

>> People are saying that teas such as herbal and green tea is a good alternative for coffee.
 Red ginseng is known as effective for recovering from exhaustion. 

>> Red ginseng is effective for recovering from exhaustion. 
 Above all, I think when you feel tired, it is better taking a rest instead of having energy drinks.

>> Above all, I think when you feel tired, it is better to take a rest than to have energy drinks.