I can't say for sure if BitMEX is currently among the largest cryptocurrency exchanges by trading volume, but it is definitely one of the leaders. The daily trading volumes here exceed a billion dollars, which ensures high liquidity. Since the price constantly fluctuates due to a steady flow of traders with diverse offers, you can trade almost any time. The key is to catch the right direction, and then every satoshi invested can yield a profit. Additionally, thanks to the wide leverage, it's possible to manage significant amounts with a small deposit. The risk is certainly high, but experienced traders know how to use such leverage correctly; trading randomly is not advisable. The platform offers Bitcoin, Ethereum, Litecoin, Tezos, and other cryptocurrencies, while fiat is represented by the dollar and Japanese yen (but they are not suitable for withdrawals or deposits, they are just trading pairs). The exchange provides a Russian version and a chat in Russian. You can trade not only on price increases but also on decreases. For this, it's enough to short, for example, Bitcoin, and profit from its decline while other traders lose money. In theory, with the provided leverage and the right timing, you could short in such a way that by the end of the trade you secure yourself for life, but in practice, it's quite challenging to achieve that.