Answer:
The "Muevase Lentamente" Part makes sense, It means "Move slowly" But After that The "Despues no duele" Part doesn't make sense. If you meant to say "Move slowly, and it won't hurt" say "Muevase lentamente,para que no le duela" :)
Explanation:
No valdría la pena el problema.
It would be 4 Español es mi segundo lenguage
Answer: molecular dynamics !
in Spanish I believe the term would be dinámica molecular.