Initially sleepy, got up, then tea: in winter you many need more than one of these (4,5)

'winter you many need more than one of these' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'initially sleepy got up then tea in' is the wordplay.
'initially sleepy' becomes 'wons' (I can't justify this - if you can you should believe this answer much more).
'got up' shows that the letters should be reversed in order.
'then' says to put letters next to each other.
'tea' becomes 'cha' (cha is a type of tea).
'wons' reversed gives 'snow'.
'snow'+'cha'+'in'='SNOW CHAIN'