Read the following context and choose the best option to answer the question.
Context: I find life hard enough . But here I am , doing a spring " cleanse . " I am cranky because I am exhausted . I am exhausted - or feeling my exhaustion - because all I ' ve been drinking is green tea , and not my usual 2 large cups of coffee in the morning plus limitless cups of black tea throughout the afternoon , and then decaf black tea in the evening .
Question: why is he doing a spring cleanse ?
Options: 
- None of the above choices .
 - it is an exercise developed for the spring
 - it improves ones diet
 - it improves strength , energy , and enjoyment of life


it improves strength , energy , and enjoyment of life