It is sinful and wrong.
Nah it should be fine, although whenever I try to do so I find that I'm really bad at following the breath for a few days afterwards. So it might be a bit of a tradeoff.
Gain and loss, status and disgrace,
censure and praise, pleasure and pain:
these conditions among human beings are inconstant,
impermanent, subject to change.
Knowing this, the wise person, mindful,
ponders these changing conditions.
Desirable things don’t charm the mind,
undesirable ones bring no resistance.
His welcoming and rebelling are scattered,
gone to their end,
do not exist.
- Lokavipatti Sutta