Those with certain health conditions, such as severe joint pain or people with cardiovascular issues, should always seek medical advice before beginning a yoga practice. Yoga poses can be modified or avoided in cases of injury recovery or pregnancy, but you should always consult a doctor if you are unsure.Those with certain health conditions, such as severe joint pain or people with cardiovascular issues, should always seek medical advice before beginning a yoga practice. Yoga poses can be modified or avoided in cases of injury recovery or pregnancy, but you should always consult a doctor if you are unsure.