We usually use no, or maybe any prefix
Com(er)
Yo - com(o)
Tú - com(es)
El/Ella/Ud. - com(e)
Nosotros - com(emos)
Ustedes/ Ellos - com(en)
They are activities so most of them end in ando because of the ing
1. bailando
2. relajante
3. excursionismo
4. nadando
Cause its a m,an in Spanish its just hard to tell