According to Ayurveda, milk is considered satvik - nourishing, grounding, natural source or ojas (needless to say when sourced right from the credible suppliers). That said, it can be a bit heavier to digest for some as it is guru (heavy), along with being sheeta (cooling), snigdha (unctuous), and madhura (sweet in taste and post-digestive effect). So these are some ways to make it easier to digest. Try them out and I'm sure you'll feel a difference.