I always say no because receipts have been shown to commonly contain BPA and other cancer-causing/endocrine-disrupting chemicals that can be absorbed through your skin. The data seems to be mixed on whether or not the dermal uptake is significant enough to pose a threat, but I just don’t want to take the chance.
If you have to have a receipt, try to touch it for the least amount of time possible, avoid touching the printed side, and keep it in a container or Ziploc bag in your main bag or somewhere else.
https://www.snopes.com/fact-check/receipt-paper-harmful/
https://www.ecocenter.org/our-work/healthy-stuff-lab/reports/receipt-deceit-toxic-chemicals-receipt-paper/test-results
https://www.sciencedirect.com/science/article/pii/S0160412020319863
https://pubmed.ncbi.nlm.nih.gov/33313651/
https://ehp.niehs.nih.gov/doi/10.1289/isee.2013.S-2-37-02
Adding onto this, I didn’t enjoy green tea until I started brewing it gong fu style with loose leaves. Teabags are acceptable for black tea but completely ruin green imo.
It’s also worth noting that there’s a noticable flavor and taste difference between different types of green (for example, I dislike the popular dragonwell, but love maofeng/mountain green tips). There’s also a gulf of difference between Chinese and Japanese green teas, due to the processing. Usually Chinese tea is pan/wok/hot air fried, leading to a more nutty and complex profile, whereas Japanese greens tend to be steamed, leading to a more vegetal taste.
I also really like matcha, if you can afford the initial investment. It’s definitely unique and can be an acquired taste. I really like the ippodo Sayaka/Horai, since it doesn’t have a very strong umami taste, which can be off putting for people new to matcha.
Edit: and yes, there is actual science backing up your interpretation of green tea being less jittery. The L-theanine, an amino acid unique to green tea and a few mushroom varieties, has a balancing effect when paired with caffeine.