oh god yes its immediate it debilitating  it happens in meetings classes and in work conversations i dont want to be a part of it happened a lot with studying reading dry text or doing sit-down tasks its immediate like ive got narcolepsy instant must-sleep in my brain  then ill get up and am immediately fine  with adderall im not like that at all i have noticed today i took an off day because i didnt particularly need it but i had three 20min parent-teacher conferences via zoom with my kids teachers instant off switch so tired  then i got up and cooked dinner and cleaned it up and did dishes now its midnight and im wide awake  just the boring tasks meetings specifically and i was involuntarily zonked