Short Answer 
Drinking coffee can promote longevity and improve cognitive function, mood, and energy levels, while e-books provide lightweight, portable solutions that reduce physical strain for students. Both claims are supported by evidence, enhancing their credibility.
Step 1: Benefits of Drinking Coffee
Research indicates that drinking coffee can lead to a longer lifespan. Recent studies have highlighted that coffee drinkers often experience various health benefits. These benefits include:
- Reduced risk of certain diseases
- Improved cognitive function
- Enhanced mood and energy levels
Step 2: Advantages of Using E-Books
Switching to e-books can greatly alleviate physical issues faced by students, especially back problems caused by heavy backpacks. By utilizing digital textbooks, students can enjoy numerous advantages, such as:
- Lightweight and portable storage
- Easy access to a vast range of texts
- Reduced strain on the back and shoulders
Step 3: Supporting Evidence for Each Claim
Both claims about the benefits of coffee and e-books are backed by relevant evidence. For instance, the studies on coffee illustrate how it contributes to longevity, while the link between physical strain and heavy books substantiates the need for e-books. This correlation enhances the credibility of the arguments, making the recommendations to drink coffee and use e-books compelling.