Clue: Must I lie around without energy? Drugs could be the answer (7)
Answer: STIMULI
Explanation: Definition: Must I lie around without energy? Drugs could be the answer
 **Anagram of**(… around) "Must I lie" **minus**(without) "e"(symbol for "energy" in physics).
Defn: How you could describe drugs such as uppers, that give you energy to be up and about.
Another &lit.