1. Gerund as subject: "Spending time in nature" is used as the subject of the sentence, showing a good grasp of complex sentence structures.
2. Present simple tense: The answer uses the present simple tense throughout (e.g. "can have," "helps," "is," "feel," "has") to talk about general truths and personal experiences, which is appropriate for this type of question.
3. Adjective phrases: Phrases like "more positive and energetic" and "calming effect" add descriptive detail and make the answer more vivid.
4. Use of connectors: Words like "Personally" and "just" help to make the answer sound natural and conversational, which is great for IELTS Speaking.