> 
> What have you been up to lately? 
> 
> 
> 

Can 'lately' be replaced by 'recently' because with *lately*, it makes me feel that the sentence means *what someone is doing till late night* Isn't it? Or to make that meaning, replacing 'to' with 'too' will work? 

This sentence is ambiguous to me. If someone is *up*, it also means *awaken*, doesn't it?