lämmittelin
Lämmitelin is a Finnish word that translates to "I warmed myself" or "I heated myself" in English. It is the past tense first-person singular form of the verb lämmitellä, which means to warm up or to heat up. The verb lämmitellä is often used in a reflexive sense, implying that the subject is actively engaging in an activity to raise their body temperature.
This action can be performed in various ways. One might lämmitellä by a fireplace, in a sauna,